You can live with a smudged wall, and you might not even smell the litter box anymore. But your guests? They'll notice. The good news is that you can fix these nine headaches in no time flat.
You aren't likely to realize how noisy your doors are until you have houseguests- especially if they get up at night to use the bathroom. Work your way around the house, applying WD-40 to the hinges of your interior doors. While you're at it, check the screws and tighten them when necessary.
Time: 3 minutes per door
WD-40 8oz., $8, amazon.com