Did you know a rat can get in a hole the size of a quarter and a mouse can get in a hole the size of a dime. Rodents gather all types of material such as paper, leaves, cotton and many other things to make a nest. It is typically in a darker or out of the way area. Rodents can spread disease. They can ruin many types of things. Rodents may urinate on things. When running along things they may leave a grease mark which is sometimes referred to as a swing mark.