Rats and mice consume or contaminate large quantities of food and damage structures, stored clothing, and documents. In most cases of rodent infestation, the pest animals can be controlled without having to resort to the use of poisons. The practices of good sanitation and exclusion will prevent most problems. If rodents do find their way indoors, small populations can be easily eliminated with various nontoxic methods. The trapping of rodent pests is often preferable to the use of poisons.
Traps prevent rodents from dying in inaccessible places and causing an odor problem.
There is no chance of an accidental poisoning or secondary poisoning of nontarget wildlife, pets, or children with the use of traps. Secondary poisoning of pets or wildlife can result from eating poisoned rodents. Traps can be used in situations where poisons are not allowed, such as in food handling establishments. The house mouse is the most common commensal rodent invading houses. It is primarily nocturnal and secretive.