Others carry the capsule a day or two, then glue it to some object in a protected place. About 12 young hatch per capsule after incubating 1 to 3 months. Roaches may enter the house in infested containers or from adjoining buildings. To keep them out, use putty or plastic wood to seal all cracks passing through floors or walls or leading to voids behind baseboards and door frames. Pay special attention to water and steam pipes entering rooms.
Roaches develop in large numbers in dirt and filth.
Thorough cleaning reduces the likelihood of heavy infestation. When bringing baskets, bags, beverage cartons, or boxes of food and laundry into the house, inspect carefully for roaches or egg capsules. Infestations can be controlled by applying insecticides in sprays and dusts. Treat only along baseboards, under cupboards, and in similar places where cockroaches hide. Do not treat surfaces used for the preparation of food.