Rats have been identified as a vector of several diseases, including plague (through rat flea), leptospirosis, salmonella, tapeworm (by urine and droppings), and rat-bite fever. In addition, rats carry secondary parasites such as fleas, mites, and ticks in their fur. Rats’ chewing and biting habits can cause harm to objects and goods. It is important to hire a rat control company to rid the rats from your property.