How Long Do Cockroaches Live Without Food and Water?

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Homes are very commonly infested with cockroaches, which are very nasty insects. The pests are cold-blooded and incredibly hardy. The cockroach is an omnivorous scavenger and eats anything it finds in its path. They generally prefer sweets, meats, spoiling materials, and starches.

Often, people wonder how long cockroaches live without food. Their extreme resistance and adaptability make them capable of surviving without food in most cases. However, without food, they can live for One Month.

Insects like these live in sewers and feed on sewage. Other species feed on decomposed wood and live on dead trees. Cockroaches eat a variety of things, as you can see below.

How Long Do Cockroaches Live Without Food

Can Cockroaches Survive Without Food and Water? And How Long?

Without food, cockroaches can live up to one month. But as water is essential for the digestion process, the functioning of the salivary glands, and the operation of the circulatory system, cockroaches cannot survive for long periods of time without it and prefer to eat moist food (waste). Cockroaches are often found in humid or high-moisture locations around the home, such as basements and bathrooms, despite the fact that they can survive for several weeks without food, but not longer than a week without water.

This is because water, which is a structural component of every cell and is involved in practically all metabolic processes, which are a series of chemical reactions, plays an exceptional role in the existence of every organism.

Water’s exceptional ability to transmit heat determines its crucial function as a thermoregulatory in living things. Therefore, cockroaches are prevented from overheating by the release of extra fluid through the Malpighian vessels on their bodies, while the nocturnal lifestyle and waterproof chitinous covers, on the other hand, assist in the conservation of water in conditions of low humidity and extreme heat.

The Lifespan Of The Cockroaches

Given that they have easy access to food and water, cockroaches live an average of twenty-five to thirty weeks. The egg stage is the earliest stage of cockroach life for both males and females. Eggs are created in containers referred to as “egg capsules.” There should be numerous tiny cockroaches that hatch because each capsule has the potential to hold between 30 and 48 eggs.
Up to eight egg capsules can be produced by an adult female cockroach in her lifetime, which translates to roughly 400 cockroaches produced by a single roach over the course of her life. The conditions in the location where the cockroach resides will affect how long it lives.

Lifespan Of The Cockroaches

Do Cockroaches Live Without a Head?

No matter how absurd this statement may seem, the response, “sure, a cockroach lives without a head,” is even more ludicrous.

Entomologist K. Tipping Research

In a series of studies, American scientists decapitated these insects in order to explore their capacity for reproduction. The researchers, therefore, came to the conclusion that, if a cockroach’s head is kept cool and fed on a specific solution, it may very well survive without a body. According to entomologist K. Tipping, after being stripped of their heads and having the necks of their bodies sealed with special wax, cockroaches can survive for a few additional weeks inside a flask.

One must be aware of how completely different the neurological, circulatory, and digestive systems of insects are from those of humans in order to comprehend how this is possible. As a result, losing one’s head puts one at risk of losing vital blood, dropping blood pressure, and having the oxygen and essential nutrition to their internal organs cut off.

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How To Make Your House Cockroach Free

These data demonstrate that cockroaches are among the most adaptable animals on the planet, which makes handling and getting rid of a cockroach infestation even more challenging.

  • Keep food well wrapped and stored, especially in the kitchen, which should be cleaned daily to prevent crumbs and rubbish from accumulating, according to experts, to get rid of cockroaches in your home.
  • Regular trash removal and storage in sealed containers are required.
  • Homeowners should look for and cover any openings in their buildings that could be used by pests, including utility and pipe entry points.
  • Crawl spaces and basements should also be kept dry and well-ventilated.

A complete guide on how roaches enter your home & how to keep roaches away from your home.


So we hope that you have found some detailed knowledge & interesting facts about cockroaches and how they live even without food and water. Feel free to share your opinion and feedback with us.


  • Will Cockroaches Leave if there is no Food?

    A cockroach can live for one month without any food. Their bodies are more effective in storing food and providing energy over long periods of time.

  • What kills cockroaches instantly?

    For instant results, you need to fumigate your area for cockroaches & it will clear your area within 3 hours. All other methods are slow to process, i.e. using gel or powder they can take 3-7 days, and it will be only effective if you have very few amounts of roaches in the issue. For severe issues, we always recommend liquid cockroach fumigation.

  • Will roaches leave if you clean?

    Even routine cleaning cannot halt the invasion of the bug. The pest will come to your home whenever they need to and want to. Keeping your area clean is a proactive measure. In this guide, we showed the most common ways roaches enter a house.