Rats are common species; they are often living with and near humans. The most common problem faced at home, workplace and other livings are rats. They can contaminate your food and cause damage to your property. They are notorious in carrying deadly diseases and contaminating food in the kitchens, they are known for their in household appliances, wiring, etc. Rats is found in nearly all areas of the earth which are inhabited by human beings. The black rat is considered to be one of the world's worst harmful species. Rats can live up to a few months, most of them die before they are one year old. Snakes are their prominent enemy. Rats have poor vision and will follow with the smell. They have strong teeth that allow them to chew glass, wire, aluminium, and lead. Smell and sound help them to follow food sources. Rats are also responsible for spreading Bubonic Plague, although fleas are primarily responsible for infecting humans, they were originally infected with the plague by feeding on the blood of rats. .