The insects / pests are attacks in various crops in both growing as well as storage conditions which cause both qualitative and quantitative losses. Among the various method of pest control, the most important is the exclusion which is also known as quarantine measure.

The principle involved in enacting quarantine is exclusion of insects/pests from entering into an area which is not infested, in order to avoid spread of the insects/pests. Quarantine principles are employed to restrict the movement of infected plant materials and contaminated soil into a state or country.