How to get rid of this?.To get rid of pest problem under control, inspection is the first and foremost step.
American roaches have three developmental stages: egg, nymph, and adult.
American cockroach egg cases are about 38 mm long. They are dark-colored—reddish or blackish brown. Homeowners often find these egg cases in basements, in laundry rooms or kitchens. The egg cases may be under cabinets or behind appliances. American cockroaches also deposit their egg capsules behind stored items in garages and sheds.
The female drops her egg capsules within a day after it is formed, she often drops it in a suitable location near a food source or in a protected area. Each capsule averages 14 to 16 eggs, and usually one capsule is produced each week and is often glued to a hidden surface with secretions from the female’s mouth, each female produces from 15-90 egg capsules.
The length of the egg stage varies from 29 to 58 days at room temperature, nymphs hatch out in 50 to 55 days.
When the eggs hatch, the tiny nymphs come out of the capsule. As they grow, the baby cockroaches shed their skins. If there is plenty of food, American cockroaches can develop from egg to adult in as little as 5½ months. The number of offspring averages around 800, under ideal conditions adult females can live up to 15 months, males for some shorter period.
Odor: Cockroaches produce a chemical called an “aggregation pheromone.” The odor of this chemical causes the roaches to stay together in groups. Some people describe the odor of these pheromones as having a “musty” smell. As the roach population starts to grow, people with sensitive noses may begin to notice this odor.