Concepts of cockroaches

The first step to control the cockroaches is to clean the environment, because it can remove the food, water and hidden places of cockroach. Also, it is very important to repair the wall or the holes that cockroaches may use it as their hidden place, because those hidden places may affect the efficacy of the pesticide or poison baits. Use a container to keep the food well, close the garbage cans and remove the old papers and boxes. Especially, do not leave any food in the kitchen after cooking everyday, and the kitchen must keep dry, because cockroaches can endure long-term starvation, but they can’t endure to the dryness. Cockroaches will not easily survive if they can’t find the water for over one week, however they can find the water easily by using their keen sense of smell. Especially cockroaches can find the water at some places around the kitchen where people may ignore, like the water plate that beneath the refrigerator, wet dishcloths and so on. So it is important to remove the water sources for cockroaches. Fill the chinks or use screening to fill the holes are the good ways to stop cockroaches, and keep the food or garbage in a plastic bag can avoid the cockroaches from polluting the food. There are many kinds of cockroach catchers and cockroach glue traps in the market today, and some of them are with baits, and some of them have the ingredient of Sex pheromone. Besides, there is still no evidence on the efficacy of supersonic repellents by scientific report.

　　The way to control the cockroaches should depend on what type of the cockroaches are. German cockroach, American cockroach, Australian cockroach and brown cockroach are the common ones we can see in our daily life, however, when control each of them must use different way. For example, German cockroaches like to hide in the chink of the wall or other objects, under the sink, in the cabinet, under the refrigerator, in the electricity box and so on. American cockroach, brown cockroach and Australian cockroach usually hide in the water pipes, gutters, drainage, subways and so on, so, it is very important to close the entrance of those places to prevent cockroaches from hiding there.