Cockroaches are best controlled using a combination of techniques. Since roaches flourish where food, moisture, and shelter are readily available, cleanliness is an important step in preventing and correcting problems. Spills and food waste should be cleaned up, and unwashed dishes, utensils, and pet food should not be allowed to sit overnight. Loose food should be stored in tight-fitting containers. Garbage should not be allowed to accumulate, and stacks of paper bags, cartons, and newspapers should be discarded or stored in sealed plastic bags.

 

Insecticides are usually necessary to eliminate infestations, especially of German cockroaches, which are highly prolific. Cockroaches spend little time out in the open; places that are hard to see and reach is where they tend to be. Dark, secluded areas near food, warmth, and moisture are preferred so a bright flashlight helps when performing inspections. Emphasis should be on finding and treating preferred harborage locations, rather than randomly spraying baseboards, countertops and other exposed surfaces. If key harborage areas are missed problems are likely to continue.