For this reason, traps and other control devices must be placed in areas where mouse activity is most apparent . Mice are very inquisitive and will investigate each new object placed in their foraging territory. If control devices are not initially successful, move them around to a different location. Mice feed on a wide variety of foods but prefer seeds and cereal grains. The best way to control mice is to prevent their entry.
Mice are able to squeeze through extremely small openings narrower than the diameter of a dime.
Good sanitation and food storage practices are helpful in reducing problems with house mice. Since seeds are a preferred food, all adjacent to the building should likewise be eliminated. However, because mice are able to occupy such small nesting areas and survive on minute amounts of food, sanitation alone will not normally eliminate an existing infestation. Rodenticides marketed to homeowners are formulated almost exclusively as food-based baits containing seeds or grain as an attractant. Most rodenticides sold over the counter are anticoagulants containing brodifacoum, chlorophacinone, diphacinone or warfarin as active ingredients.