When given a choice, they prefer sweetened liquids over plain water. Their preferred nesting sites are dark, secluded places where there is abundant nesting material nearby and little chance of disturbance. Mice are nocturnal in habit. The key to any mouse control program is pest identification, sanitation, harborage elimination, and mouse proofing the building. Control is based on the behavioral habits of mice.
Mice defecate wherever they travel but mostly where they feed.
Mouse droppings serve to indicate where control efforts should be concentrated. Nontoxic tracking powders can also be used to determine where the greatest mouse activity is occurring. Traps and bait stations must be placed within this area if control is to be effective. If a trap or bait is unused after 48 hours, move it because the mice are elsewhere. Mice are nibblers.