The German cockroach is a major concern. This species is the one that gives all other cockroaches a bad name. German Roaches cannot survive in locations away from human activity unless there is a steady cold temperature. Studies have shown that German cockroaches could not survive in homes without central heating in northern climates. The availability of water, food, and shelter also governs the ability of German cockroaches to establish populations and limit growth.
German cockroaches corrupt food and food products with their feces and secretions. They also transport pathogenic organisms which may cause severe allergic reactions and in extremely heavy infestations, roaches have been reported to bite humans and feed on food residue that can be found on the faces of sleeping humans. Some suggest that German cockroach infestations may cause human psychological stress and that the stigma associated with infestations alter their behavior. For example, people with houses that are infested with roaches do less entertaining and avoid the kitchen at night for fear of encountering a cockroach.
In order to get control of a German Cockroach infestation, it’s going to take some work. Everything in the kitchen cabinets needs to be pulled out and cleaned. The cabinets themselves needed to be cleaned and probably vacuumed out as well. What appears to look like dirt is actually roach feces. YUCK! You certainly do not want to spend all this time cleaning and place clean things back in that! So please, please, please use a vacuum and thoroughly clean up all the roach feces. Look behind and under the following: Refrigerator, Sink, Microwave, Oven, Dish Washer, Toaster, Coffee Maker, etc. You’d be surprised. Roaches can and will live inside of these things! By cleaning and removing their food sources, it will help get the roaches under control. Once you’ve cleaned thoroughly, take the vacuum cleaner,, trash bags, etc., outside. Let me repeat that. Take the vacuum cleaner, trash bags, etc OUTSIDE to the trash. Do not leave it inside. Clean out the vacuum cleaner outside. You do not want to leave any of that stuff inside. A typical German roach egg case contains 30 to 40 eggs. The egg case is a tiny, brown, purse-shaped capsule. You do not want to accidentally leave one or two roach egg cases behind after you clean. That would potentially be 60-80 baby roaches waiting to hatch and take over the house again. Cleaning and keeping it clean is a big part of eradicating the German Roach population in a dwelling. Once the cleaning is done, then you may use a roach gel bait sparingly in the cabinets, under the sink, and around the appliances.