ACME RODENT MANAGEMENT : Now let’s talk prevention and treatment. If you have found dead rat , chances are it could represent many, many more hiding in your home or property – spreading disease-carrying droppings and potentially creating costly damage. Even if your cat, Tigger, is a deadly mouser, he can only catch the rodents that he can get too. Mice and rats, tend to hide out in wall voids and other hard to reach areas. They can fit into spaces as small as a dime for a mouse and the size of a nickel for rat, which means a lot of the time, Tigger is out of luck.