How to Get Rid of American Cockroaches
Cockroaches are one of the most common pests that people will come across because of their extremely keen ability to adapt to any environment. The five most common cockroaches that are found in the United States are German roaches, American roaches, Oriental roaches, Brown-banded roaches, and Smokey-brown roaches.
The American cockroach is the largest species of house infesting cockroaches. Unlike German cockroaches that nest inside the wall void areas, American cockroaches nest outdoors and only come inside to forge for food. They are commonly found in damp and dark areas like in the basement, crawl space area, bathtubs, sewers and etc. However, even though cockroaches are found in the home, they are most commonly found in restaurants, grocery stores, cafes, or other places where food is prepared and stored. People will most likely run into American cockroaches after dark and in areas of storage. They can be flushed out or detected during the day when their hiding spaces are probed out.
American cockroaches are transported into homes from boxes that were left out in infested areas. They also move from one building to another, entering through small cracks in the building, around loose doors or windows, and through and along the pipe system. Before bringing boxes home from areas that are infested, the box should be inspected thoroughly. Also, sealing opening cracks and crevice areas in the building are preventative measures that people should take. Sanitation is also crucial for cockroach control. Cockroaches will enter buildings that have a good food supply. Cleaning up after a spill of foods or liquids is extremely important. Food should be kept in sealable bags and containers. Also, because cockroaches are attracted to moisture, removal of rotting leaves from the outside and limiting the moist areas that are in and around the premises can help reduce the areas that are attractive to American cockroaches.
Outdoor: First and foremost, because American cockroaches come from the outside, treatment should take place outside as well as inside the home. This can also be considered a preventative measure that people will take so that American cockroaches do not enter the home. Liquid insecticides (LambdaStar 9.7% CS, FenvaStar EcoCap) are a surface treatment and crack & crevice treatment spray that can be sprayed around the perimeter of the building with a gallon sprayer . The most thorough way to treat the home is to spray two feet up the building and spray the area up to two feet away from the building. Wet-able powder products (DEMON WP) are powder type products that must be mixed with water. They would be sprayed the same way as liquid insecticides. The major differences between the two are that one is:
- Liquid insecticides are liquid concentrates that have to be diluted with water whereas wet-able powders are in a powder form that is mixed with water and sprayed.
- Liquid insecticides have a shorter residual time than wet-able powders.
- Wet-able powders leave a more visible residue whereas liquids dry clear.
Both liquid insecticides and wet-able powder insecticides can be sprayed onto shrubs; however, they should not be sprayed on fruit and vegetable gardens. You also want to spray these insecticides around door frames and window frames, cracks and crevices around the structure, and around utility pipes that will lead to the inside of your home.
Granules (BIFEN GRANULES, TALSTAR EZ GRANULAR) are products that for outdoor use only. Granules have a similar residual time as liquid insecticides. It is applied in 2-5 feet bands around the perimeter of the house. Bait Granules (NIBAN GRANULAR BAITS) can also be applied in the same way as standard granules. The difference in baits and regular granules is that baits are brought back to the nest and standard granules are a contact kill insecticide. Baits can also be used indoors whereas regular granule products cannot be used indoors.
Indoor: Indoor treatment is primarily for German cockroaches; however, treatment is also crucial for American cockroaches that enter the home for a food supply. Gel baits ( MAXFORCE FC MAGNUM, ADVION ROACH GEL) may probably be the most effective for indoor treatment. Gel baits have a delay kill effect and after consumption, cockroaches will bring it back to their nest to share. Gel baits are placed by station in infested areas or squeezed out manually from syringes. Pea-sized amounts are placed 1-2 feet apart if they are squeezed out manually from a syringe. Granular bait insecticides (NIBAN FINE GRANULAR BAIT) can be used as well. These baits are typically used in crawl spaces, attics, and cellars with dirt or gravel floors. Granules can be applied liberally by scattering the granules under and behind the refrigerator, cooler, stove, sink, dishwasher, and etc. They can also be put into removable trays and place in areas like under the sink. Both gel baits and granular baits should not be put in areas that are accessible to children and pets. Aerosol sprays and liquid insecticides (ALPINE, LambdaStar 9.7% CS, FenvaStar EcoCap) used as a surface treatment or a crack and crevice treatment. They can be sprayed around window sills and door frames. Allow time for the liquid to dry before coming in contact with the treated areas.