Replace weatherstripping and caulk around doors and windows to keep your house snug and the bugs out. Weatherstripping in particular takes a beating during the summer. The foam type is especially prone to breaking down. Arm yourself with three rolls of weather stripping in different thicknesses, a dull blade to scrape off old weatherstripping, and a pair of scissors to cut new weatherstripping. You can completely weatherstrip a door in under ten minutes. Don’t you feel warmer already?