Sometimes it seems that these household pests are immortal! No matter how much you try to get rid of them, they survive everything: poisons, cold, and hunger strike. But, in fact, the answer to the question of how long cockroaches live will not be able to hit your mind: for an ordinary red cockroach, this figure varies 9 to 12 months And then if he's lucky. Of course, life expectancy is highly dependent on the type of insect: for example, black cockroaches, as well as large tropical species, can live on average 2 years, and the Madagascar cockroach, which is lucky with the owner, can generally live in captivity for 3-4 years! But back to our Prussians: are they as tenacious as it seems to us?
Cycle of life in favorable conditions
If we immediately say how long a cockroach can survive in extreme conditions, this figure will be difficult to estimate. In order to understand whether this is a lot or a little, you need to understand how long red cockroaches live under normal conditions, with, so to speak, an ideal scenario for the development of events for them.
- The nest usually begins immediately with several individuals wandering into your apartment and deciding that you can live happily ever after. But one fertilized female will be enough. And the process of fertilization, for your information, in cockroaches occurs once upon reaching puberty, and this is enough for a lifetime. You know, it doesn't bode well.
- The eggs laid by a fertilized female develop for some time in an ootheca - a special protective sac. This is where the Prusak is the hardest to get! Firstly, ootheca is impervious to most chemicals, and eggs do not suffer when baited. And secondly, eggs in the ootheca can themselves regulate how many days the development process will take, slowing it down in an unfavorable external environment. An indispensable mechanism to guarantee the continuation of the family!
- From the ootheca, nymphs immediately hatch - larvae that resemble a reduced adult. This usually happens 2-4 weeks after laying, and the growth process starts. After 6-8 molts, the insect will become sexually mature, but how often these molts occur depends on the temperature. At room temperature, the nymph will be ready to give birth in 2 months, but if the room is cooler, the process may be delayed.
- How many years do adults live? Their potential varies in the region of 9-12 months, but they rarely exhaust it completely, especially with active human intervention in their lives. But until death, the imago produces offspring, increasing the number of the nest exponentially.
It is interesting!
If you were impressed by the information about how long Madagascar cockroaches live, you should know: very often a law operates in nature: the smaller the species of one genus, the less it lives, and vice versa.
It seems that Prussians do not live that long in favorable conditions, but let's see how long red cockroaches live in conditions that are far from optimal.
How long does a cockroach live without food and water?
How long do cockroaches live without food and water - in fact, these are two completely different questions with a huge difference in the answers.
The digestive system of insects is very different from the human one: having received food, their body can expend energy extremely slowly. Metabolism in Prussians is slowed down 20 times compared to a human, plus energy is not spent on maintaining body temperature, since they are not warm-blooded - this is where the unimaginable figure of 40 or even 50 days comes from.
Black cockroaches are generally able to live without food for 80 days. And we thought that they are so dependent on the crumbs that we scatter around the apartment!
At the same time, the Prussian will last only 3-5 days without water. Not so much different from a human, right? And all because water is the basis of all cellular processes, and both we and cockroaches are made of cells. This is why having sources of food and water is not equally important.
Can cockroaches live in the cold?
How often do you see insects outside in winter? We think that during the winter you manage to forget what mosquitoes, flies and forest ants look like. Here, in principle, is the answer to the question of how long cockroaches live without heat - not at all! At temperatures below zero, the Prussians fall into suspended animation, and at -5 ° C both adults, nymphs, and eggs die. Less pampered species can hold out in a sub-zero environment for several hours, but their death is inevitable, since they live only in warm places, and they cannot keep the body warm on their own.
Can a cockroach survive in radiation?
The myths that cockroaches survive even with a strong radiation background are not myths. But it's not just their superpower. Many insects are less sensitive to radiation than humans, but in cockroaches this indicator of survivability exceeds ours by as much as 15 times.
How long does a cockroach live without a head?
The answer to the question of how long a cockroach lives without a head is close to the figure from the question about water. And yes, the fact that they do not die immediately is absolutely true! Having lost its head, the cockroach will not die from blood loss, because the vessels will be sealed with clots and the system inside the body will continue to work. Also, he will not suffocate, because cockroaches breathe with their bodies, not their heads. They will not lose their nervous system either: nerve nodes are scattered all over their body, which are enough for basic reflexes. So the body will live without a head as long as water resources allow, which will be impossible to renew without a head.
It seems that this information about cockroaches gives reason to argue with the assertion that man is the crown of creation, and to think: why didn’t mother nature bother to reward us with the same impressive survival abilities?
Historical evidence suggests that cockroaches appeared on Earth even before the dinosaurs (300 million years ago). Over the past historical period, they have adapted as much as possible to different conditions of existence and are able to survive in the most adverse conditions. We will try to find out what environmental factors affect the life of an insect.
At home, a fertilized female cockroach wears an ootheca or sac filled with eggs on her abdomen for two weeks. Then the ootheca darkens, the eggs mature, and the female throws off her future offspring in a secluded place. Further development is as follows:
- A few days later, nymphs (larvae) are born from the eggs.
- After transferring several molts, they grow to an imago (adult insect). Before that, 50-200 days pass, on average - 100 days.
- Adult Prussians live 100-200 days.
- In general, from the birth of the larva to the end of the life of the red Prusak, 9-12 months pass. The black cockroach is able to live for 2-3 years.
Frequent guests in the apartments are red-haired Prussians. Less commonly, houses are inhabited by black cockroaches. They like to live in conditions of high humidity (in houses with a broken plumbing system and damp rooms). Vitality and endurance of two different species is very high.
Factors affecting the life of a cockroach
Life expectancy depends on many external factors, which we will dwell on in more detail. The Prussians need water, food, air, normal temperature conditions. The question is which factors are the most important, and how long can an insect live if it is limited in one of them.
Lack of food
The metabolism is 20 times slower than that of warm-blooded animals, so food is not the main factor in survival. The Prussians can go without food for several weeks. Once they have eaten, they starve for a long time, falling into a state of hibernation. Black cockroaches survive without food for 2.5 months.
Bed bugs and cockroaches can live in the same apartment without intersecting or interfering with each other. They have different food sources and a different way of life, so the colonies do not quarrel with each other and do not show aggression.
Lack of water
Insects need water the most. Without water, they can last no more than a week. This time is enough for their population to noticeably decrease. To do this, you need to remove open sources of moisture, wipe the sink and bathtub so that there are no drops of liquid anywhere. Make sure that the heating pipes do not leak at home and puddles do not spread anywhere.
All vital processes of an insect are connected with water. If you pickle the apartment from pests, then moisture can save them, removing the poison from the body. Despite the strong shell, the liquid quickly evaporates from the body, so they cannot live without water for a long time.
The need for air
Whiskers can live without air for 30-40 minutes. If an insect is placed under water, then for such a period of time it can survive.
On the sides of the body, the domestic cockroach has spiracles, which are important not only for breathing. When closed, they retain moisture inside the body.
Temperature regime
On a note: Pests steadfastly withstand exposure to radiation. The dose at which they are still alive is 15 times higher than what is possible for human survival. But with prolonged and strong exposure, insects die.
The life of a cockroach without a head
It has been experimentally proven that a cockroach without a head can last up to 9 days. Separated from the body, the head moves its whiskers for several hours. Explanations for such a strange phenomenon exist:
- the head is not needed for breathing: spiracles are located on the sides of the body;
- the circulatory system is not closed and without a head, the cockroach has no bleeding or pressure drop;
- in the segments of the body there are nerve clusters that continue to fulfill their role: the insect can stand, move, feel touch.
If you cover the place of cutting off the head with dental wax, then the body lives for several more weeks. In the future, it dies from infections or dehydration (cockroaches cannot drink without a head).
There is an assumption that after another war or catastrophe, the last organism that will remain on earth will be a cockroach. And this version is quite justified: the insect withstands hunger, radiation, lack of food. The only thing that is detrimental to him is the lack of moisture and cooling. But there are species that are not afraid of such conditions. This is a living creature universally adapted to extreme conditions.
Many are familiar with cockroaches firsthand. These insects can be seen both in a village house and in a city apartment. How long do cockroaches live? They are able to live without food and water for a long time. Even radiation exposure that is fatal to humans is harmless to cockroaches. They freely tolerate a dose of radiation that is 15 times higher than the lethal one for humans.
There are more than 4 thousand species of cockroaches in the world. Some of them live next to a person. The most common of them are black and red. Redheads are also called Prussians. These insects are 10-15 mm long. They have large wings and long whiskers that help them navigate and communicate with other insects. The insect has developed legs, on which it moves very quickly. It lives in warm conditions, most often in people's homes.
The black species can be up to 5 cm long. The wings of females are short, those of males are long. Females are 5 cm long, while males are much smaller - only 2-3 cm. They live in warmth, often next to a person. American cockroaches are similar in color to Prussians. These insects are up to 5 cm long. Females are larger than males.
It has a size of up to 9 cm. It can hiss quite loudly. Lives in the bark of some trees in the Amazon. It is completely harmless to humans, a rather shy insect. It comes to our country with parcels. These insects live in houses and apartments. Its large size does not allow it to hide in the cracks, so the fight against it does not present any difficulties.
Habitat and habits
This question is of interest to many. The owners of apartments and houses in which these guests live are especially interested in them. These insects are unusually tenacious creatures. They go 40 days without food. And absolutely everything serves as food for them, even concrete and brick. The main condition for their life is the presence of water. Therefore, they settle closer to its sources.
In the apartment, such a place is a bathroom and a kitchen. When water is found, insects start looking for food. Their digestive system is designed in such a way that it digests a wide variety of products of organic origin.
After about 2-4 weeks, the females throw off the offspring, hiding it in an inaccessible place.
A common feature of the representatives of this family is an incomplete cycle of their biological development. They do not have a stage of transformation of larvae into pupae. Females carry fertilized eggs on their stomachs in a special container called an ootheca. The eggs grow over time, the ootheca also swells and becomes heavier.
After 2, maximum after 4 weeks, the offspring are shed in a warm place with sufficient humidity. Nymphs hatch from the ootheca. These are small (up to 2-3 mm) white cockroaches. Nymphs gradually turn black, their shell hardens. Before the transformation of the nymph into an adult cockroach, several molts pass.
The life expectancy of an adult is 20-30 weeks.
For their habitat, insects usually prefer secluded corners in hard-to-reach places. They can be found behind the refrigerator or under it, under the sink, baseboard, in various crevices. In their corners they live in fairly large groups. During the day, they try not to crawl out of their minks, since their mode of life is nocturnal. At night and early in the morning, when everyone in the house is sleeping, they have time to eat crumbs and small pieces of food that they find on the floor or on the kitchen table. In daylight, they appear only when their burrows do not accommodate all individuals. Their appearance during the day is a signal to take measures to exterminate insects.
For a more fruitful fight against cockroaches, you need to know the places of their resettlement. Insects to look for:
- under the fridge
- Behind the refrigerator
- Under the sink
- Under the bath
- Behind heating appliances and pipes
- Under skirting boards
- Behind kitchen cabinets
- In the mechanisms of hanging cabinet doors
- In trash cans.
These are the most favorite places of their settlement.
Whether a cockroach lives in a particular place is easy to determine by the smell and by the black dots of feces remaining in places of active life of insects.
Without food, they live for several weeks, without water for no more than a week.
They feed mainly on foods high in organic matter:
- Sweets and sugar
- Beer
- Khebny crumbs and flour products
- toilet paper and tissues
- meat
- Wallpaper and glue
- Spoiled and rotting food
- Stockings, socks and underwear
- Books, magazines, newspapers
Life span and vitality
The red cockroach from a nymph turns into an adult in summer at a temperature of about 30 ° C after 2 months. If the temperature is 20°C, this transformation takes up to 6 months.
The red cockroach lives in a house or apartment for 9-10 months. Of these, adults live for 20-30 weeks, the rest of the time larvae develop. lives less than red for a couple of months. Without food and drink, the life expectancy of cockroaches is reduced. Without food, the red cockroach lives for about 50 days. The life of a black cockroach without food can be 70 days. This is due to the fact that domestic cockroaches are cold-blooded creatures. They do not expend energy maintaining a constant body temperature. In the absence of food, they can simply hide and wait for food to appear.
Red representatives turn from nymphs into adults in 2 months in summer and 6 months in winter
The survivability of cockroaches drops sharply along with a decrease in ambient temperature. The Prussians begin to die already at a temperature of -1 ° C. Therefore, cold is a good method of dealing with these creatures. How many years do insects of this species live without water? Water is the main thing in the life of cockroaches. Without non-viability lasts up to 7 days. Moisture evaporates intensively from the surface of the shell, and the insects dry out and die. That is why the Prussians are more willing to eat moist food or its waste. It is easier to digest in the body and contains enough moisture.
Can an insect live without a head?
Yes, a cockroach lives without a head
Weird question. But after a series of experiments, American scientists were able to prove that a headless cockroach also continues to live (up to 9 days). The thing is that their circulatory system is not closed. They do not lose blood and therefore continue to live. But in this case, they cannot get food and water.
The respiratory process occurs not with the help of the head, but with the help of holes, spiracles on the body and small tracheas.
The brain is not involved in breathing. It is not particularly needed for life, since all parts of the body have ganglia - nerve knots. They are fully responsible for all reflexes. The insect can move its paws, get up and move.
Effect of Temperature on Insects
The activity of cold-blooded insects depends on temperature. Cockroaches love warmth. The optimum temperature for them is from +2 to +28°C. It is at this level that it is always maintained in residential premises. Therefore, cockroaches often become our neighbors.
At what temperature does death occur? At 0°C, insects slow down all vital functions, including reproduction processes. At temperatures from -5 to -10 ° C, insects die in 30-40 minutes. With a subsequent decrease in air temperature, cockroaches die even faster.
The high temperature of the surrounding air is also detrimental to them. With heat above 28 ° C, cockroaches lose a large amount of moisture, which they really need. Upon reaching 50°C, death occurs within a few hours. This can be used in the fight against hated neighbors in the kitchen. It is worth remembering that cockroaches are afraid of boiling water. It can also be used to control insects. Boiling water is simply poured a little into the cracks where the pests nest.
Popular Pest Control Products
You can fight these red and black pests with cold, heat and many other means:
- Boric acid
- Disinfectants
- Folk methods.
Boric acid has long been used as a cockroach killer. It shows very good results in practice. Boric acid powder is used to make insect baits. Pests die after testing the composition and infect their fellows. For people living indoors, boric acid is absolutely safe.
Of the disinfectants can be called preparations in the form of gels, sticks and aerosols. When used correctly, they are capable of destroying entire colonies of pests. Their disadvantage is that they are harmful to human health. Therefore, before using these products, you need to hide all food and utensils.
Where do cockroaches come from? This is a question that many housewives must have asked themselves. Previously, these insects were a real scourge of mankind, but a few years ago they disappeared almost without a trace, according to scientists, due to radiation from phones. However, cockroaches have recently become active again, so you need to know how to avoid their appearance and how to deal with them.
Contrary to popular belief, cockroaches never start on their own, even if the house is a terrible mess. A cockroach must be brought into the house, and a very clean hostess can do it by chance. Another thing is that in an untidy house they take root much easier, since there they have something to profit from.
A cockroach can get into the house in the following ways:
- Crawl from the neighbors. Usually this is how cockroaches appear in the apartments of apartment buildings. They crawl through pipelines or ventilation channels, or simply come through the doors from the entrance.
- Sneak along with shopping. In some not too clean stores, you can sometimes find cockroaches, and they can easily get into the bag and so get into your house. Such a "surprise" can also be brought when buying something from the hands or in the market.
- To return with you from vacation or business trip in luggage along with souvenirs.
- Arrive in a parcel by mail or by courier from an online store.
By the way, it was the parcels that caused the spread of the American cockroach in our country, which could previously only be found in the USA and Canada.
As you can see, a cockroach can easily get into any house, no matter if you are dirty or tidy. And insects breed very quickly, so you need to get rid of them as urgently and decisively as possible.
Cockroaches, by the way, are of different types, and the methods of their removal and the reasons for their appearance depend on this.
Red cockroaches
Red, or brown cockroaches, are the most common variety of these insects, which is also commonly called the Prussians.
These cockroaches feed on leftover food and are generally not very dangerous, however, they are quite unpleasant and can spoil leftover open food. By the way, it is very important for their life activity that water is freely available in the house - and this usually happens when there are problems with plumbing.
Black cockroaches
This is a rarer variety. They are found in private houses, as well as in high-rise buildings, but usually not higher than the fifth floor. Such cockroaches come, as a rule, from sewers and dustbins.
Black cockroaches are very large, so the question of where large cockroaches come from is usually addressed to them. Sometimes they reach three centimeters in length! Such cockroaches breed rather slowly, but they are much more dangerous than their red counterparts, because they smell unpleasant and carry various serious diseases:
- diphtheria.
- Typhoid fever.
- Dysentery.
- Helminthiases.
You can become infected with them if you eat food on which they crawled. Therefore, the question of where black cockroaches come from is very relevant, because it is very important to prevent their appearance at home.
Black cockroaches need to be feared more, although they are usually fewer in number than red ones.
white cockroaches
It is not a separate species. The fact is that for some time after molting, the Prusak skin becomes very thin and white. We rarely see such cockroaches, because usually after molting they try to sit in shelters.
There is another answer to the question of where white cockroaches come from. Occasionally, they turn white due to the fact that a person poisons them - caustic chemicals can deprive the shell of brown color. The cockroach itself can survive.
Where do cockroaches come from in their homes
The question of where cockroaches come from in a private house is easy to answer. They enter private houses in the same way as they enter apartments - from the street from neighbors or with purchases from the store. By the way, since cockroaches do not tolerate cold, in winter they will definitely not be able to come to you from their neighbors. Black individuals in the warm season sometimes crawl into houses located next to garbage dumps.
Why cockroaches move to other places
Most often, insects still come to us from neighbors. However, many people wonder where cockroaches come from if they used to live with their neighbors and they were fine there. This question is not very difficult - cockroaches migrate to new habitats. And they do it for the following reasons:
- Due to too rapid reproduction, the number of cockroaches is constantly increasing. Over time, they simply cease to have enough food and space for the entire population, and insects crawl into other rooms.
- Changing living conditions. If your neighbors suddenly start poisoning cockroaches, or if they go on a long business trip and leave them without food and water, then it will become very uncomfortable for insects to live there. As a result, they will leave en masse, and it is possible that they will go to your apartment.
What cockroaches need to live
Cockroaches are unpretentious creatures. They are resistant to many poisons and can live for several days without a head, but they still need some conditions for existence:
- Plus temperature. Cockroaches are actually exotic insects that came to us from the tropics, so the negative temperature instantly kills them. That is why they live indoors and not on the streets. By the way, before they fought with cockroaches - they just left the house for a couple of days without heating. But now it is difficult to implement - even with the heating valves closed, the house will still be too warm.
- Water. Without water, cockroaches cannot categorically live - like people, they need it even more than food. Therefore, if you can’t get rid of cockroaches in any way, then you might think: do you have an open source of water in your house? A dripping faucet, condensation on the stove, even a couple of drops on the kitchen sink - this is enough for insects to quench their thirst. So if you're dealing with cockroaches, be sure to fix any leaky pipes and keep surfaces dry at all times.
- Food. Of course, cockroaches also need food. They eat everything, both fresh and spoiled. If there is no other food, then they can eat skin or paper for a while. Therefore, during the removal of cockroaches, it is very important to hide all food, carefully shake off the crumbs and wipe countertops and stoves, and also take out the garbage at night. In general, remove food from free access.
Is it hard to fight
Fighting cockroaches is a rather difficult task. These creatures have a very high survivability, so it will not be easy to expel them from your apartment - it will take a lot of time and effort. True, in terms of finances, this business is not particularly costly, since all cockroach remedies are usually inexpensive. Unless replacing plumbing to block access to water can be expensive.
Here are a few facts about cockroaches that show their vitality:
- A cockroach without a head can live for at least ten days. It is also able to reproduce during this period.
- Cockroaches live even in conditions of very strong radiation and feel comfortable at the same time.
- For forty days they can live without food. Moreover, the hunger strike does not weaken them, but makes them aggressive - cockroaches can even start to bite, and it is very painful!
- A lot of cockroach poisons also do not take. And they quickly get used to toxic agents, so the poison should be used only proven, and periodically change it to another.
Cockroaches: where they come from and how to get rid of them
The fight against these insects, as we said above, because of their vitality will be a long and painstaking task.
Where cockroaches come from, we found out, it remains to understand how to survive them from the house. Usually carried out in several stages:
- Thoroughly clean the entire apartment and pay special attention to the kitchen. Wash the floor everywhere, wipe the surfaces from grease and dirt. All the time while removing cockroaches, clean regularly.
- Buy special insecticides from the store. They are gel and aerosol, and you can use them together - first treat everything with a spray, and then lubricate the places where cockroaches often appear with gel.
- Also repeat the treatment regularly to kill young cockroaches that have just hatched from eggs.
- If the number of cockroaches continues to increase, change the insecticide.
- If you are sure that cockroaches are crawling towards you from your neighbors, then take a number of measures. Close as much as possible all the openings through which cockroaches can get to you, for example, pipeline risers. Close the ventilation openings with gratings, the mesh cells of which will be of the minimum size. Also, treat all potential passages with gel or chalk.
If you do everything right and are patient, then soon you will be able to forget about cockroaches. However, remember that if they continue to live with neighbors, then if you give up slack, then cockroaches will crawl over to you. Perhaps a conversation with heart-to-heart neighbors and an offer to help get the insects out of them will help to get out of this situation.
Cockroaches are the most respected order of insects by biologists. More than 300 million years ago, when there were no dinosaurs on earth, they already existed, and their appearance remained practically unchanged. They have adapted at all times and on all continents. And only the cold could stop them, but several species have adapted here too: the steppe and Lapland cockroach. If Europe began to suffer more than 400 years ago, then cockroaches came to Russia in the second half of the 17th century. The black cockroach came to us presumably from Turkey. And his red-haired brother was delivered by soldiers who returned from Germany after the Seven Years' War, hence his second name "Prussians" came from. There was a time when it was considered a symbol of domestic well-being and prosperity - it was believed that if cockroaches live in a house, it means it is warm and full there. It has been used medicinally, dried and made into powder, infused and treated for ulcers and indigestion. They insisted on vodka "cockroach". He felt free to live and multiply.
Interesting fact: There are studies confirming the resistance of cockroaches to radiation. A human can withstand 500 rads (units of exposure to radiation), but a cockroach can withstand 6,400 rads!
Stages of life
The fertilized female lays her eggs in an ootheca (pouch) that she carries with her on her abdomen. Within 2-4 weeks, the ootheca darkens and increases in size. After the female drops it in a warm secluded place, small white cockroaches (nymph) appear from it, their size is no more than 3 mm. Then the nymphs darken and grow up, go through a period of several molts (about 5). The period of transformation of an imago into an adult can last from 2 months to six months, it all depends on the ambient temperature (optimally +30 ° C). And the total life expectancy of a red barbel is 9 - 12 months, and its black counterpart is up to 2 years.
Do cockroaches need food
Since they are cold-blooded (poikilothermic) insects, they do not need energy to maintain their body temperature. In such insects, the metabolism is slowed down by 20 times, and therefore, having eaten once, it is able to survive a long fast. But there is also a minus - they can normally exist only at positive temperatures, and already at -1 ° C their number decreases sharply. One of the methods of dealing with them is freezing.
How important is water to them?
Water is the main source of life for cockroaches. If without food they can exist for a long time, then without water, like many living organisms, a very short period of time. Without replenishment of the body with moisture, the Prussians can live no more than 6-8 days. Since they are thermophilic, water evaporates from their body through the chitinous shell, which leads to the drying of the insect. In a dwelling, they can replenish water from wet food, leaking taps, drops in the sink, condensate on pipes, from the soil when watering flowers.
Are cockroaches insects or animals?
- If they live with a neighbor, these are insects, and if you live with them, then these are animals!
Does a cockroach live without a head
The answer to this question is clearly “Yes”. Not only can the body exist without a head for up to 2 weeks, but the head can live without a body if properly maintained in the laboratory. This was proved by American scientists by conducting a series of experiments on cockroaches. Without a head, cockroaches move their paws, roll over and even move. But as scientists note, the separated parts of the body will not be able to coexist normally, as with a whole organism.
Cockroaches and radiation
The claim that cockroaches feel at ease with large doses of radiation is debatable. Yes, they are very tenacious, freely tolerate hunger and large doses of radiation. But let's turn to the facts: a person can tolerate an infection of 500 rads, for a cockroach this dose is 15 times more. And for a cockroach, it is about 6400 rad, and exceeding this norm for a cockroach is inevitable death.
Cockroaches and low temperatures
It is low temperatures that are the main enemy of cockroaches. It is sub-zero temperatures that can completely destroy the colony of these almost unkillable insects. Prussians are cold-blooded insects and this is what plays the decisive factor, normal ventilation can disrupt the development cycle of insects. At a temperature of -1 o C, the number of the colony decreases sharply, and a temperature of -5 o C will completely destroy all cockroaches.
Conclusions from Tikhon: No wonder they say that the last one left on earth will be a cockroach. His body and body structure allow him to survive in extreme situations, he can hold his breath and survive a dose of radiation exposure. But the two main factors that can help in the fight against them are cold and lack of moisture. And if you add modern insecticides, then they will not have the slightest chance of coexistence.
Happiness to you and your home.
