MiceCommon house mice are found in nearly every country. The average mouse only lives about 5 months in the wild, primarily due to predators. Removal of mice is key as they can be harmful pests, damaging and eating food stores and spreading disease through their parasites and feces. Mice are small rodents, resembling diminutive rats. They usually have pointed snouts and small ears. A typical mouse is 1 to 5 inches in length.

When building a nests grass, fibers, and shredded material are the preferred choices. Mice are able to breed at 50 days old, and will breed year round. The average gestation period is 20 days with an average litter size of 10-12 baby mice. Mice will eat meat, the dead bodies of other mice, thier own fecal matter and have been observed to self-cannibalise their tails during starvation. Mice are often portrayed to enjoy cheese and people sometimes use it trapping bait, though mice actually do not like cheese due to its fatty texture. Instead, they like foods that contain high sugar levels, although chocolate is toxic to them. There are diseases known to be spread by mice and rats which include: Rickettsial pox (a disease similar to chicken pox), rat bite fever, food poisoning, hantavirus, bubonic plague and various parasites.