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The Cockroach - Dealing with Cockroaches

Updated on December 3, 2012
Ohio fossil
Ohio fossil

Cockroach History

The earliest fossilised cockroach was found by geologists from Ohio State University in 2001. Measuring 8cms long, it was carbon-dated and proved to belong to the planet 300 million years ago, 55 million years before the first dinosaur.

The really remarkable thing about this discovery was that the cockroach remains unchanged in comparison to its descendants of today’s world. While practically all other life forms on Earth have evolved drastically, the cockroach hasn’t.

If we can overcome our innate distaste for the cockroach, we can learn that is actually an amazing creature.

Virtually unchanged for hundreds of millions of years, it has a unique ability to stay alive. Reckoned to be one of the few species in the world to survive a nuclear war, their ability to adapt and resist chemical controls is notorious. Scientists continually need to develop new pest control chemical formulas as the cockroach ups its resistance level.

The Cockroach and Water

Cut the head off a cockroach, and it can live for up to a week afterwards, only dying when it dehydrates through lack of fluid. Try to drown it by flushing it down the drain is a waste of time. Cockroaches can not only swim, they can hold their breath underwater for up to 40 minutes, plenty of time to traverse the pipes in which it has been placed and come safely out somewhere.

Infestation of Cockroaches

Cockroaches can live for up to a month with food, but only a week without water.

If you have an infestation of cockroaches in your house, get a plumber in to fix all leaks under the sink or under the bath, and never leave exposed water lying around. Your cockroaches should be gone in a week or two if you can ensure they are completely starved of water. This method of cockroach eradication is not recommended, however, as you would really have to drain all your cisterns, and water overflows and not allow them to refill if you wanted to be 100% sure your cockroaches didn’t have anything to drink.

The Cockroach

Cockroach Infestation

Cockroaches are Prolific Breeders

Cockroaches have the ability to hide themselves completely in a house, only coming out to feed after dark, and you are unlikely to know you have a problem until there are too many of them to fit into the tiny hiding places they find.

They are prolific breeders. One pair of cockroaches can turn into 2 million in the space of just 1 year. Some female cockroaches after mating for the first time are pregnant for the rest of their lives! This is because she carries the eggs on the outside of her body and can release those egg casings up to 8 times a year after only being inseminated once. Cockroaches generally only live for one year, but under laboratory conditions can survive up to 4 years.

cockroaches and a cockroach egg casing bottom left in picture
cockroaches and a cockroach egg casing bottom left in picture

Cockroach Babies

Eggs and Egg Casings

Each egg casing can contains up to 40 eggs, and when hatched the babies take only 3 – 4 months to reach adulthood where they are big enough to mate themselves.

The hard outer shell of the cockroach gets discarded now and then, leaving a white cockroach though it does change back to its normal color within a few hours. This process is known as molting, and occurs more often in juvenile cockroaches where it happens perhaps once a week.

The Cockroach and a Nuclear Attack

Cockroach Molting

It is at this time of cell division that cockroaches are at their most vulnerable from nuclear attack. Creatures who self-repair or grow through cell division (humans for example) are most at risk from nuclear fallout. As the physiology of cockroaches only uses cell division during their molting process, only those cockroaches actually molting at the time of a burst of radiation are at risk. The rest WILL survive, so cockroaches can survive an atomic bomb.

While cockroaches prefer heat, they can survive temperatures as low as the freezing point of water, although they do tend to get killed off by temperatures lower than this. It is reckoned that they can actually acclimatise to live in colder temperatures as they must have done to survive the previous Ice Ages on planet earth.

The Cockroach Spreads Diseases

Spread Diseases

Cockroaches are considered pests because they spread disease, as well as causing asthma and allergies in some people. Like the mouse, they cast their droppings as they walk, and they eat any organic waste material. Living frequently in drains in hot countries, they walk out of a drain or sewer that could contain human faeces and pathogens, and then walk all over any food that is left out contaminating it. They also contaminate every surface over which they walk, and this is not visible to the naked eye. The faeces of cockroach is reported to resemble grains of black pepper.

They frequently regurgitate half digested food and leave it behind and is that practically invisible to the naked eye. As by morning there is no sign of their nocturnal activities, people may start preparing food over worktops that still look shiny clean from the scrubbing they would have had the night before, with a high risk of these pathogens and bacterium contaminating food, causing maybe illnesses including diarrhoea, dysentery, hepatitis, typhoid, leprosy, tuberculosis, E. Coli, salmonella and dermatitis.

Cockroach Species

There are 4000 species of cockroach in the world, but only a few infest our homes and cause problems. They are the German cockroach (Blattella germanica ), the American cockroach (Periplaneta americana ), the Oriental cockroach (Blatta orientalis ) and the Australian cockroach (Periplaneta australasiae ).

Cockroaches can fly. Their wings are diaphanous (see-through). Leaving windows open at night when they are at their most active is another way they can gain entry to your house.

Deter Cockroaches from your Home

  • Always cover foodstuffs, especially sugars as they have a sweet tooth, and don’t leave any water lying around.
  • Wash and dry dishes the night before so that water is not left lying in the sink.
  • Clear up any crumbs or waste foods immediately.
  • Repair any leaky taps or pipes as soon as you notice there is a problem.
  • Clean down any grease on or near your cooker.
  • Don’t leave waste lying around – take your trash out regularly.
  • Keep compost bins back from your doors.
  • Weatherstrip your home to prevent access.
  • Seal off any cracks and crevices.
  • Don’t allow trees and bushes to overhang your home, as this could be an access route.


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    • ellahall2011 profile image


      8 years ago

      This is very helpful hub.

    • IzzyM profile imageAUTHOR


      9 years ago from UK

      Thanks for commenting. I've written so many articles about cockroaches now (they are all over the web) that I've become quite an expert LOL

      I LOVED your hub and am linking it here and advising everyone to read it. It doesn't matter to me if they then leave this page to do so (although folks you can always right click and choose open in new tab) because this hub isn't really a money-maker I don't think.

    • mysterylady 89 profile image

      mysterylady 89 

      9 years ago from Florida

      This is very well written and shows a great amount of research. You might get a kick out of my roach story.


    • IzzyM profile imageAUTHOR


      9 years ago from UK

      I can't stand cockroaches, but they are quite fascinating creatures! Thanks for commenting :)

    • D.A.L. profile image


      9 years ago from Lancashire north west England

      IzzyM fantastic hub. I appreciate how much work that went into producing this work on a subject that is not a favourite with many people. However, they do co-exist with us and the information you have shared with us can only benefit our knowledge. Thank you.

    • IzzyM profile imageAUTHOR


      9 years ago from UK

      LOL, I wish I'd been half as interested in learning things when I was still at school! Bit late now but keeps the old brain cells active :)

    • De Greek profile image

      De Greek 

      9 years ago from UK

      YOU are a mine of information :-)))

    • IzzyM profile imageAUTHOR


      9 years ago from UK

      Heheheh!! I hate them too, but it's good to be able to understand them a bit better!

    • WriteAngled profile image


      9 years ago from Abertawe, Cymru

      Oh my! Now I shall scream even louder next time I see one...

    • IzzyM profile imageAUTHOR


      9 years ago from UK

      Thanks Habee and esatchel!

      You wouldn't believe the amount of research and actual writing I have done on this bug - the hardest thing is looking at the videos. The one here is quite tame.

    • esatchel profile image


      9 years ago from Kentucky

      This is a fine Hub and a seriously icky bug. Ewww!

    • habee profile image

      Holle Abee 

      9 years ago from Georgia

      Ugh! Excellent info, but reading it and looking at the pics made my skin crawl!

    • IzzyM profile imageAUTHOR


      9 years ago from UK

      Thanks Larry :)

      Yukky though they are, they're really quite incredible long as they stay out of MY house lol

    • maven101 profile image


      9 years ago from Northern Arizona

      You have made an interesting and informative Hub out of a truly repulsive bug...This species wrote the book on survival...Thanks for this information...Larry


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