My house is clean, where did they  come from?

People often blame a cockroach problem on poor housekeeping. While cleaning floors, kitchens, and bathrooms is useful and very important to reduce food sources used by cockroaches, they may get inside and cause an infestation for other reasons. 

These pests can hitch a ride on infested items (paper bags, cardboard boxes, even food items) brought inside, get indoors via cracks and gaps in the home’s exterior, enter through drains or sewer pipes and a few species of cockroaches can fly inside when attracted to lights.

Signs of Cockroach Infestation

Cockroaches are nocturnal insects. They prefer to live and feed in the dark, so a cockroach seen during the day is a possible sign of infestation. Cockroaches tend to prefer dark, moist places to hide and breed and can be found behind refrigerators, sinks and stoves, as well as under floor drains and inside of motors and major appliances. Because they can flatten their bodies to fit into narrow areas, cockroaches may also be found hiding beneath rubber mats, behind wallpaper and within wall cracks.