The Common German Household Roach | Dr. Killigan’s

Cockroaches, Insects, bugs and ants can be killed with Dr. Killigans Non-Toxic insect sprays and Insect buster with diatomaceous earth.

What is the Life Cycle of a Cockroach?


These nuisances have been around since the dawn of time and, according to legend, will be around long after you and I are gone. They are said to even survive a nuclear detonation. Yes, the dreaded cockroach. The most common in the world is the German Cockroach. Would you even believe that this species of roach even has wings? But thank heavens they do not fly. They do wreak havoc around kitchens and bathrooms. The life cycle of a house roach favors areas that are warm and damp.

What is the Life Cycle of a German Cockroach?

You would not think that the roach we have the most problems within the U.S. would have a foreign name, but it does. There is an American Cockroach. It is much larger, they can be up to three inches, and you do see them, they are not as common, however. Also, they do not infest a home as do the German variety.

The German Cockroach is a small brown insect 1/2” to 5/8” long, is oval in shape, has six legs, and long antennae. They have three stages of their life cycle:

  • Egg – The roach egg is carried in a casing called an ootheca. It houses 30-40 eggs. This purse-like pouch is carried by the female until the eggs are ready to hatch. She will carry the ootheca around for about a month.
  • Nymph – The nymph stage begins as soon as they are hatched. They begin their life bright white, nearly translucent. As their cuticle hardens, they become dark brown to almost black, with parallel bands running the length of its body.
  • InstarNot really a life stage, but it is the stage in-between stages of molting. Roaches will molt their exoskeleton and display their white appearance again until a hormone called bursicon, assists in hardening and darkening their shell until the next molt. They will molt up to six times before emerging as an adult in about 60 days.
  • Adult – After the final instar molting stage and they complete their bursicon hardening, they will continue to feed and begin to seek out a mate to begin the cycle all over again. As adults, the German Cockroach will live up to 200 days.

The overall life cycle will depend on many factors like temperature, location, and food availability. Their ideal conditions are warm and damp. So, they thrive in kitchens and restrooms. They are not picky about food and will eat anything and everything. This is why you will find them in cabinets, closets, in between cardboard, in trash cans, in storage items, anywhere, and everywhere. Their greatest threat is human activity.

Are They Harmful?

Given that they are frequent travelers, are not picky about what they chose to dive into, and can reproduce at an alarming rate, yes, they can be seriously harmful.

  • Roaches can leave behind casings from molting as well as ootheca. These ‘dusts’ can become an allergen issue for those with sensitivities or those suffering from asthma.
  • Roaches forage through the filth and can bring that into your home. Walking across counters, tables, and other items you may not see can contribute to the spreading of E. coli and Salmonella.
  • Roaches will contaminate anything they touch. Harmful to the food because they make it inedible and harmful to the pocketbook because you have to replace it.

How Do I Get Rid of Roaches?

The first thing to help you in your fight against roaches is cleanliness. Roaches are attracted to unemptied trash cans, a sink full of dirty dishes, and unswept floors. These conditions are more favorable when you live in a multi-family housing unit. You may be clean, but your neighbor may not be. All it takes is one night of being too tired to clean up, and you may find yourself with new unwanted guests.

If you do not live in apartments or condos, you will want to check the items coming into your home: Cardboard boxes, new purchases (especially used items,) and anything from somewhere known to have a roach issue. Also, keep areas around your home free of the clutter that attracts roaches.

Dr. Killigan’s provides two methods to assist with ridding your home of roaches.

Dr. Killigan’s Insect Buster is designed to disperse Diatomaceous Earth (DE.) DE is a powder insecticide that is non-toxic and non-poisonous, and when paired with our Insect Buster, an excellent means for reaching roaches in the areas where they are hiding. DE is known to be safe for humans and a safe alternative to traditional insecticides. Dr. Killigan’s Insect Buster bulb is sturdy, easy to aim, and easy to store with DE powder inside of it.

Roaches are insects people hope and pray they never have to deal with. But when you do begin to see their activity, you’ll want to rid your home of them quickly. Dr. Killigan’s Six Feet Under ™ is an on-contact all-natural roach spray. It is a proven method to rid the areas in and around your home of roaches.

Our team of professionals is dedicated to perfecting the art of Killing Them Softly™. We have designed 100% toxin-free products that are not only safe, but are also created with style, restoring peace of mind and returning “classy” to your home.

We are continually raising the bar in toxin-free pest control remedies. All our products come in a design that is pleasing to the eye and carries a 100% satisfaction guarantee. If you are not satisfied for any reason, contact us, and we will not hesitate to make things right.