Seal the Exterior of Your Home
Sealing your home is an excellent way to prevent spiders and many other pests from entering. Spiders can get through very tiny openings, so even small cracks and gaps should be sealed. Use caulk on these small crevices, and expandable spray foam can be used to fill larger holes. It is also important to check that all your doors and windows have a tight seal with intact weather stripping. If the screens have holes or tears, they should be replaced or repaired.