The life cycle of the German cockroach consists of an egg, nymph and adult stage. The female produces an egg case and carries it for about four weeks. The brown, purse-shaped capsule which contains 30 eggs is dropped in a protected area. In about three weeks, the nymphs emerge and experience several growth stages before becoming an adult. The nymph stage could take up to three months before completion.
Nymphs are similar to adults but smaller and white in colour.
The best approach to preventing any pest infestation is to eliminate favourable conditions. Preventing access to food, water, shelter and maintaining a clean home are important steps to achieve this. However, this will not guarantee exclusion, but it will help minimize the possibility of an infestation. Reduce excess moisture in plumbing areas by insulating pipes and fixing leaks. If you suspect a piece of furniture is infested, have it steam cleaned.