To prevent mice from entering the home, all cracks, crevices, holes and gaps larger than a pen cap should be sealed with cement or a mixing compound. It is not advised that wood be used to seal these holes, as mice are capable of chewing through those surfaces.
Cleanliness may also have an effect on mouse infestations. Be sure to wash dishes immediately following use. Food should be stored in glass or metal containers with tight lids. Mice acquire most of their water from scavenged food particles, so no crumbs or morsels should be left on tabletops or floors.
When a home is already infested, prevention methods prove inefficient. The most effective mouse control methods are those administered by trained professionals.