Keep food and garbage in tight containers. Clean up all crumbs and spills on floors, counters and shelves as soon as possible. Keep faucets and drains under sinks and appliances in good repair. Do not let water stand in the sink for long periods of time. Keep clutter from accumulating, especially in kitchens and bathrooms.
Cockroaches often hide in messy cabinets and in stacks of newspapers, bags and rags.
Vacuuming is very important because it can remove small food crumbs and cockroach egg-cases that may not be killed by insecticides. Good sanitation is important, both inside and outside the house. It is often the best control measure for cockroaches. It is impossible to list all the insecticides and products. You can usually find the right chemical in the store by looking at the lists of ingredients on the containers.