Rats are very dangerous if they infest the home and garden as they can carry multiple infectious diseases which can be transmitted to you and your family. They will chew through insulation, wood paneling, walls, electrical cables and burrow throughout the home or business premises. Rat bites and scratches can result in disease and rat-bite fever and their urine will also transmit infectious disease. Rats in your garage can climb up into your car and chew through electrical wires causing an auto electrical nightmare.