Liquid pesticides are released from various types of sprayers, such as the compression Sprayers, or fogging machine, forming small droplets that float inthe air or settle on object surfaces with which the passing insects will come into contact. Residual spraying is to apply residual pesticide over the object surfaces on which there are pest activities. It is mainly used to combat crawling insects or those staying on an object surface for a long period of time, such as cockroaches, fleas, ticks, and ants.

Gas Pesticides are used in fumigation. Its advantage lies in the small molecules which have a strong penetration force than any other pesticides. It is especially suitable for treating areas with many cracks and crevices where pest like to shelter. Another advantage of fumigation is the easy dispersion of gas, which will not leave any residue on the surface of treated objects.

A simple device is needed to put in the baits. It is most important to choose a suitable location for placing the baits or trap. In general, the baits or trap should be placed near to activity areas of pests, but not easily accessible to humans and non-target organisms. And it has to be placed far away from food, and food processing area.