Caulking can help keep unwanted invaders like mice and mildew as far away from your home’s crevices as possible. But first, you need to know how to use a caulk gun.

Caulking is one of the easiest and most affordable home fixes. By sealing off unwanted cracks around windows, doors, showers, and more with a bead of waterproof filler, you’ll be able to prevent home ...