Do You Have a Moldy Dishwasher? Here’s How to Tell and How to Fix It.
Having a moldy dishwasher is a common problem. Here's how to spot mold growth, clean it up without harsh chemicals and prevent mold from coming back.
Thank goodness for the invention of the dishwasher! As an avid cook and baker, I love spending time in the kitchen—except for the cleaning-up part. It’s easy to take the dishwasher for granted, but dishwashers need care and attention, too. Specifically, your dishwasher is often warm and full of wet dishes or dampness lingering from a past cycle: a breeding ground for bacteria, mold, mildew and other unpleasant issues. Here’s how to tell whether you have a moldy dishwasher, and what to do about it.
How to Tell If There’s Mold in Your Dishwasher
There’s almost certainly some mold in your dishwasher. According to a Medical Mycology study, 62% of dishwashers across six continents had some fungal growth; some types were harmful, while others included household mold and mildew and yeasts.
Signs that your dishwasher needs imminent cleaning include a strong, often musty odor, and visible signs of mold.
Where Does the Mold Come From?
The dishwasher is a dark, hot, damp environment that’s pretty much tailor-made for fungal growth. Plus, many kinds of fungus can survive going through the wash cycle, even on high heat. Mold growth is especially likely around areas that remain wet, like crevices, and rubber parts, including the seals around the door, gaskets and drain covers.
How to Clean a Moldy Dishwasher
The secret to cleaning up mold? A simple scrub-down with soapy water. Here’s what to do:
- Remove the racks, rotor and drain strainer (if they come out) and clean them in the sink.
- Deep-clean the dishwasher with a bottle brush or a toothbrush, paying special attention to rubber and plastic parts.
- Scrub the drain opening, and scrub the seal around the door, making sure to fold it back to clean the underside.
- Last, run a sponge up and down the sides to clear up any problems there.
After clearing away mold, disinfect the dishwasher. While bleach is a potent disinfectant, its abrasiveness isn’t ideal for the dishwasher. Instead, reach for vinegar, which will kill the majority of bacteria and mold strains. (Vinegar is one of our favorite cleaning products for all over the home.) Put a cup of distilled white vinegar on the top rack and run the dishwasher on the hottest program.
How to Prevent Mold in Your Dishwasher
To discourage mold growth, it may help to keep your dishwasher door open a crack; when my dishwasher had a continually funky aroma, keeping it open rather than snapped closed completely eliminated the smell.
If your dishwasher drawer falls open if not latched shut, leaving it cracked open might be a dangerous practice around children or pets. In that case, it’s helpful to leave the dishwasher completely open for an hour or so after unloading a clean cycle of dishes. This allows the dishwasher to dry completely, making it more difficult for mold to take hold.
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