Filling cracks, holes, and crevices with steel wool is a safe way to keep mice out. Check around windows, fireplaces, vents, and other tight spaces for entry points that mice can fit through. Using ...

Scents from peppermint oil and ammonia deter mice. Seal any bedroom entry points with caulk and steel wool. Keep the space free of food and clutter. In extreme weather conditions—whether hot, cold, or ...