Rats comprise the mayor group of pests which are of great importance in terms of economic damage in houses. restaurants. supermarkets. food factories. mills. godowns and warehouses. They are also responsible, for damaging buildings. ceilings and walls due to their burrowing and gnawing activity. Rats are responsible for transmitting and spreading of various diseases to people and domestic animals. (Plague. Murine Typhus. Rat bite Fever. Rackettsial pox. Salmonallosis (Acute Food Poisoning) and Leptospirosis. Rats are capable of abruptly causing millions of rupees in the production loss due to shutdown or complex computer systems when they gnaw inside computers and other highly sensitive equipments. A pair of rats can give rise to nearly 800 dascsndants in any. Year and 350 million in 3 years.