DIY pest-proofing that actually works

Your fastest pest fix is not a spray. It is sealing the tiny openings pests already use, then cutting off food and water so they stop treating your home like a free hotel^[6][3].

Start with entry points: check doors, windows, foundation cracks, utility openings, vents, and the garage. Mice can fit through a hole about the width of a pencil, so small gaps matter more than they look^[2][6].

Seal the biggest gaps first. Use caulk for small cracks, steel wool plus caulk for tiny rodent holes, and hardware cloth or metal sheeting for larger openings. Door sweeps and weather stripping are quick wins^[2][6][22].

Then remove the attractants. Keep food in tight containers, wipe crumbs, empty trash, fix leaks, and do not leave pet food or water bowls out overnight. That helps with ants, roaches, and rodents all at once^[2][3][33].