How to Eliminate German Cockroaches: A Comprehensive Guide
German cockroaches are the most common type of cockroach found in homes throughout the U.S. and much of the world. They are small, brown, and have two short lengthwise stripes on their pronotum. German cockroaches are known to carry pathogens of over 30 diseases, and their discarded skin castings are believed to be the number one trigger of asthma in urban environments.
Causes of German Cockroach Infestation
German cockroaches are often introduced into homes on people and possessions. They can also travel through walls, ceilings, floors, and vents in multi-family dwellings. In rare instances, newly purchased items, such as groceries, can act as a carrier.
How to Prevent German Cockroaches
The most effective way to prevent a German cockroach infestation is to keep your home clean and free of food scraps. German cockroaches thrive on food such as trash, dirty dishes, and leftover grease, as well as residues from toothbrushes and dish sponges. Store food in airtight containers, take out the trash every day, and eliminate standing water or dampness in crawl spaces, basements, and other unfinished spaces.
Methods for Getting Rid of German Cockroaches
Cleanliness
Good basic sanitation can help to prevent or get rid of German cockroaches. Keep your home clean and free of food scraps. Vacuum or sweep kitchen floors regularly, and don’t leave dirty dishes on the counters or in the sink.
Poison
Roach insecticide baits are commonly used to get rid of German cockroaches. Gel baits are often the most effective, but they must be used properly and carefully. Place bait traps where you most often see the German cockroaches. Reapply bait to avoid re-infestation by new nymphs.
Natural Treatments
Two natural treatments for German cockroaches include diatomaceous earth and boric acid. Powder forms of these pesticides can be applied to crevices and other areas harboring cockroaches.
Professional Extermination
For faster and more effective treatment, consider hiring a professional exterminator. Professionals typically get rid of roach infestations faster than a homeowner can because of their expertise and experience.
Difference Between German and Asian Cockroaches
German and Asian cockroaches are very similar in appearance, but they are very different in behavior. The Asian cockroach lives outdoors, while the German cockroach lives indoors. The Asian cockroach is attracted to light, while the German cockroach prefers the dark. The Asian cockroach can fly, while the German cockroach cannot. The Asian cockroach is found primarily in the southern U.S. and Japan, while the German cockroach is common nearly everywhere.
FAQs About German Cockroaches
How long do German cockroaches live?
Both male and female German cockroaches have a lifespan of 20 to 30 weeks. An adult female can produce 100 to nearly 400 eggs in a lifetime.
Do roach bombs work?
Experts generally discourage the use of “roach bombs” in homes because they are largely ineffective for combatting German cockroaches. Foggers can also cause German roaches to disperse from their original locations, spreading their infestation to new areas.
How do I know if I have roaches?
Pest control pros often use sticky traps to test for roach infestation and investigate the severity of the pest problem. Place baited sticky traps in multiple locations where roaches are most likely to be found.
