If you change the habitat, try to use materials that cockroaches dislike. Do not keep paper bags, sacks, cardboard boxes, rags or pieces of wood in locations where cockroaches may be present. One of the biggest mistakes is the practice of storing paper sacks next to the refrigerator because it establishes a layering effect next to a warm area and a high source of humidity. This paper bag storage practice is an excellent cockroach breeding site. Examine all areas, in the kitchen, bathrooms, laundries, basement and storage closets, especially near where cockroaches were found in your traps.
Re-organize and eliminate any clutter.
Any portable items that are providing harborage should be sealed in cockroach-proof containers or heavy plastic bags. Do not overlook cabinets and furniture. These areas need to be sealed so the cockroaches have no places to hides. Commonly neglected areas are behind molding, small holes in cabinet doors, around rubber gaskets, around water pipes, in hollow tube legs of kitchen tables, where cabinets or walls meet each other, or around built-in appliances. Caulking is an easy, economical way to seal most of these cockroach hiding places.