Closing Washer Door After Laundry Breeds Mold, Experts Warn

Experts warn that the seemingly harmless habit of closing the washing machine door after a cycle is the primary culprit behind mold growth inside the appliance. Moisture trapped in the sealed space creates an ideal breeding ground for bacteria and mold.

According to recent reports from the U.K.'s Daily Mail and other international outlets, the rubber gasket around the washing machine door is one of the most common mold hotspots in the home. Moisture, detergent residue, and fabric lint accumulate inside the rubber seal during wash cycles, maintaining a warm and damp environment. The gasket's deep folds make it particularly difficult for moisture to evaporate naturally. Keeping the door tightly shut only makes the situation dramatically worse.

If freshly washed clothes smell musty or an unpleasant odor wafts out every time the door opens, mold has likely already spread inside. Social media is filled with accounts of users sharing their dismay. "I casually pulled back the rubber gasket and was horrified to find pitch-black mold," one user wrote. Others complained that "no amount of scrubbing with a sponge removes the stains."

The easiest and most effective way to prevent this problem is ventilation. Simply leaving the washer door and detergent drawer wide open after each cycle allows hidden moisture to dry completely, significantly reducing mold growth.

Regular cleaning is also essential. The rubber gasket, where mold forms most easily, should be thoroughly wiped about once a month. The detergent drawer and bottom filter should also be cleaned. If mold has already appeared, wiping the affected areas with a microfiber cloth soaked in vinegar and then running a hot-water drum-cleaning cycle without laundry is effective. This also helps remove residue and odors built up inside the drum and pipes.

Daily laundry habits deserve a review as well. Overloading the drum or leaving wet clothes sitting inside after a cycle are shortcuts to mold growth. Loading an appropriate amount of laundry and removing clothes immediately after the cycle ends can keep a washing machine far more hygienic and extend its lifespan.