Mold is a type of fungus that loves the moist, wet areas of your house. The best way to avoid a mold problem is to be proactive and inspect your house thoroughly at least once a year. The best way to prevent mold is to repair any leaks or consistent sources of moisture throughout your house. If you don’t have a bath fan, be sure to crack a window or leave the shower door open so moisture can escape. It’s also a good idea to perform a bathroom caulk inspection to make sure you’re all sealed up.