Some of the more popular home and commercial methods of cockroach control are baits, powder dusts, sprays, and traps. The cleverly marketed roach motel is still regularly stocked on the shelves in grocery, hardware, drug, and convenience stores. Another type of bait is the pheromone trap, which attracts roaches with odor. Although these methods may be successful with adult cockroaches, they do not kill the egg capsules that have already been produced. To accomplish this there are liquid sprays which inhibit the sexual growth of immature insects and prevent them from reproducing. The most effective method of cockroach control is a multiple-strategy attack employed frequently.