Exclusion One of the primary means of initial cockroach infestation is via roach infested grocery bags. Grocery stores are large, and infestation of products is likely. Make an effort to visibly scan groceries for cockroaches before putting the groceries away. Keeping doors and windows shut and screens in good shape can often prevent the entrance of cockroaches into your home. Caulking cracks and gaps will keep a seal around doors and windows and will help prevent cockroaches from entering your home.
Children can transport cockroaches from school to home in bookbags and lunchpails.
Inspect these items on a regular basis. Cockroaches are easily capable of migrating on plumbing from one apartment to the next. Elimination of Food Sources German cockroaches can remain alive for approximately 2 weeks with no food or water and for 42 days with only water. It is of utmost importance to realize that cockroaches do not need a large, visible amount of food to survive. Researchers have determined the highest concentration of cockroaches is near the garbage can.