Nowadays there are many ways to destroy insect and reduce damages from pest. Besides, there are pests in exported products that affect on export value and setting price of agricultural products. Insect and pest control is necessary for agriculturists to solve the problem. Farmers use many ways with insects and pests such as, 1) Biological Control or Biocontrol. This method is using pests’ natural killers to destroy and control the outbreaks. For example, farmers used Chelisoches morio (Fabricius) and Krigrogramma waspto control and destroyed Brontispa longissima Gestrowhich ruined top of coconut trees. Farmers also maintained good environment for pest killers to live and propagate. This method is widely used to control Pultella xylostella, Trichoplusia ni, Spodopterasp, Heliothis armigera, and Leaf rolling centerpillar.