A crayon or lip balm that went through the dryer left a waxy coating on the drum interior that transfers color or residue to every load of clothes until it is removed. A drum that smells musty is transferring mildew spores to everything dried in it. Both situations are straightforward to fix, and both require cleaning the drum surface rather than just running an empty cycle and hoping the problem clears on its own.
The approach differs depending on whether the issue is waxy residue or odor, but in either case the drum needs to be clean before clothes go back in. Running a test load of old rags after cleaning confirms that all residue is gone before anything you care about gets dried in the machine.
Cleaning Waxy Residue
Unplug the dryer before starting. Run the dryer empty on medium heat for two minutes, then turn it off. Working on a warm drum keeps the wax soft and significantly easier to remove. While the drum is still warm, wipe the interior surfaces with a cloth soaked in rubbing alcohol. Work in sections and use firm pressure. The rubbing alcohol dissolves wax at room temperature and the warmth keeps it from hardening again as you work.
Wipe with fresh sections of cloth as each one picks up color or residue. Crayon leaves visible color on the cloth as the wax lifts from the drum. Continue until no more color transfers to the cloth. Then wipe the entire drum interior one final time with a clean dry cloth to remove any remaining rubbing alcohol residue before plugging the dryer back in.
For crayon color that has already permanently transferred to the drum liner, spray WD-40 directly onto the stained area and allow two minutes of contact time. Wipe with a clean cloth. The oil in WD-40 dissolves wax-based color in the same way it handles crayon on walls. Follow with rubbing alcohol on a clean cloth to remove the WD-40 residue before running the dryer again.
Cleaning a Musty-Smelling Drum
Drum odor comes from mildew that develops when clothes are left in the dryer without running it, or when the dryer has been stored or unused for an extended period. Wipe the entire drum interior, including the rubber door seal and the drum baffles if accessible, with a cloth dampened with white vinegar. Work thoroughly into the door gasket where mildew accumulates in the folds.
After wiping, leave the dryer door open for at least thirty minutes to allow the drum and seal to dry completely. The mildew smell will dissipate as the vinegar dries. Running the dryer empty on medium heat for ten minutes after the airing period finishes the process and confirms the drum is fully dry inside before clothes go back in.
The dryer vent is a separate but related issue. A partially clogged vent causes longer drying times and higher humidity inside the drum during drying cycles, which contributes to mildew formation. The dryer vent cleaning guide covers that process, and it is worth doing at least once a year as both a maintenance and safety step.
You can find rubbing alcohol spray and microfiber cloths on Amazon for this cleaning. Plant Paper bamboo towels also work well for the wipe-down step and hold up to the rubbing required for firm wax removal without falling apart. The laundry tips for busy moms guide covers the broader habit of checking pockets before loading laundry, which prevents the crayon situation entirely.
For the washing machine side of the laundry routine, the front-load washing machine cleaning guide covers drum and gasket cleaning for washers, which share some similar odor and residue issues with dryers. If mildew smell is present in your laundry generally rather than just in the dryer, the removing mildew smell from clothes guide addresses that from the laundry side. Keeping appliance cleaning as part of a regular schedule covered in the cleaning schedule for busy moms prevents these problems from accumulating. If you want a complete foundation for managing all of this consistently, the When You Were Never Taught to Clean guide ($11.99) covers appliance maintenance alongside every other area of the home.
