Proven Steps: How to Get Mold Out of Sneakers Now

Immediate Action (first 5 minutes)

If you leave your gym shoes in a damp car trunk after a rainy run, you'll eventually spot those fuzzy green or black patches. Don't panic. I've ruined a pair of $180 New Balance 990s by immediately throwing them in the washing machine while the mold was still active. The water just pushed the spores deeper into the mesh. Your first five minutes are critical. Take the sneakers outside immediately. You don't want to knock those spores loose in your living room. Put on an N95 mask. Grab a dry, stiff-bristled brush and gently knock off the surface layer of dry mold. Do this over a trash can. I'll be honest, this takes elbow grease, but removing the top layer dry prevents it from turning into a muddy, spore-filled paste when you apply liquids later. Mold eats organic materials. Canvas and leather are basically an all-you-can-eat buffet for fungi. The longer it sits, the deeper the roots penetrate the fabric. I remember pulling a pair of vintage Converse Chuck Taylors out of a damp garage last November. The black spots were already spreading across the white rubber foxing tape. Speed is your best friend here. Fungi multiply rapidly in humid environments. If you catch it within the first 48 hours of noticing the smell, you can usually save the shoe.

What You'll Need (tools/products)

You can't just grab any old soap. I've tested dozens of cleaners over my 8 years of restoring vintage kicks. Some strip the dye. Others leave a sticky residue that actually attracts more dirt. Here is the exact kit I use to save moldy sneakers. It costs about $45-60 total if you're buying everything from scratch. Don't skimp on the brush. A cheap plastic bristle brush from the dollar store will snap off and leave little plastic shards embedded in your shoe's mesh. Invest in the proper tools. It makes the physical scrubbing process significantly easier on your wrists.

Item	Specific Brand/Model	Why I Recommend It	Price Range
Cleaning Brush	Jason Markk Premium Standard Brush	Hog bristles are stiff enough for canvas but won't scratch leather.	$18-22
Mold Killer	RMR-86 Instant Mold Remover	Kills spores on contact without heavy scrubbing. Smells like bleach, so use outside.	$15-19
Leather Cleaner	Angelus Easy Cleaner	Safe for painted leather and won't strip the factory finish off your Air Force 1s.	$12-15
Protection	3M N95 Particulate Respirator	Blocks microscopic mold spores from entering your lungs while you brush.	$2-4
Drying Aid	Vornado VFAN Jr. Air Circulator	Provides constant, gentle airflow to dry shoes in 4 hours without melting glue.	$35-45

Keep a roll of heavy-duty paper towels nearby. I prefer the Scott Shop Towels because they don't disintegrate when wet. You'll also need a bucket of cold water. Keep the temperature around 60°F to 65°F. Hot water will weaken the polyurethane glue holding your soles together.

Step-by-Step Removal

This isn't the cheapest option, but doing it right saves you from buying a replacement pair. I follow this exact 5-step protocol for every moldy shoe that crosses my workbench.

Step 1: Dry Spore Removal (10 Minutes)

Take your Jason Markk brush and scrub the dry mold. Do this outside. Brush in one direction to push the spores off the shoe rather than grinding them into the weave. If you're dealing with suede, skip the stiff brush. Use a crepe brush instead. Suede is incredibly porous. Stiff bristles will permanently bald the nap.

Step 2: Apply the Mold Killer (5 Minutes)

Spray the RMR-86 directly onto the affected canvas or mesh areas. Don't soak the shoe. A light, even mist is all you need. Let it sit for exactly 3 minutes. I've found that leaving it longer than 5 minutes starts to yellow white rubber midsoles. The chemical reaction breaks down the mold roots instantly. You'll actually see the black spots fade away before your eyes.

Step 3: Deep Clean the Uppers (15 Minutes)

Mix two drops of Angelus Easy Cleaner with 8 ounces of cold water. Dip your brush into the solution. Scrub the entire upper in circular motions. Work the lather deep into the stitching. Mold loves to hide in the tiny gaps where the upper meets the midsole. Pay extra attention to the toe box. That area gets the most moisture when you walk through wet grass. If you're working on knit materials like Primeknit or Flyknit, be incredibly gentle. Knit fabrics snag easily. Use a soft horsehair brush instead of the hog bristle brush for these delicate uppers. Pressing too hard will fray the yarn and ruin the aesthetic of the shoe.

Step 4: Rinse and Extract (5 Minutes)

Wipe away the suds with a damp microfiber towel. Don't dunk the shoes in a bucket of water. Submerging them traps moisture inside the foam padding. That trapped water is exactly what caused the mold in the first place. Rinse your towel frequently. Keep wiping until no more soap residue transfers to the cloth.

Step 5: Controlled Drying (4 to 6 Hours)

Stuff the toe box with crumpled newspaper or cedar shoe trees. This absorbs internal moisture and maintains the shoe's shape. Place the sneakers in front of your Vornado fan. Set it to medium speed. Keep the room temperature around 70°F. Never put them in direct sunlight. UV rays will yellow the rubber and crack the leather. They should be completely dry to the touch within 5 hours.

Alternative Methods

Sometimes you don't have professional shoe cleaners on hand. If you're dealing with a sudden mold outbreak after a basement flood, these household backups work in a pinch. I've used all three with solid results.

White Vinegar Soak for Canvas

White vinegar kills about 82% of mold species. Mix equal parts distilled white vinegar and cold water in a spray bottle. Saturate the canvas uppers. Let the solution sit for 15 minutes. The acetic acid breaks down the fungal cell walls. Wipe it away with a clean cloth. The shoes will smell like a salad dressing factory for about 24 hours. The odor dissipates completely once they dry.

70% Isopropyl Alcohol for Leather

Vinegar can damage leather finishes. For mold on leather sneakers like Common Projects or Nike Killshots, use rubbing alcohol. Dampen a cotton pad with 70% isopropyl alcohol. Gently wipe the moldy spots. The alcohol evaporates quickly, which prevents the leather from waterlogging. Follow up immediately with a leather conditioner. Alcohol strips natural oils. If you skip the conditioner, the leather will crack within a week.

The Freezer Method (Temporary Fix)

This doesn't kill the mold. It just puts it to sleep. If you find moldy shoes but can't clean them until the weekend, put them in a sealed Ziploc bag. Throw them in your chest freezer at 0°F for 48 hours. The extreme cold halts the growth and stops the spores from spreading to your other shoes. Once you take them out, you still need to brush and clean them. It's strictly a pause button. Baking soda is another great household staple. It doesn't kill mold directly, but it absorbs the musty odors that linger after you've cleaned the shoes. Sprinkle a generous tablespoon inside each shoe and let it sit overnight. Dump it out the next morning. It's a fantastic finishing touch for stubborn smells.

Prevention Tips

Mold needs three things to survive: moisture, warmth, and organic food. Your sweaty feet provide all three. If you have kids who track mud everywhere and leave their wet cleats in a dark closet, you'll be fighting this battle constantly. Here is how I keep my collection safe.

• Control the Humidity: Keep your closet humidity below 50%. I run a $45 Vremic 35-Pint Dehumidifier in my shoe room during the summer. It pulls liters of water out of the air every day.
• Use Desiccants: Throw two 5-gram silica gel packets inside each shoe after you wear them. You can buy a bulk box of 100 packets on Amazon for about $12. They absorb the sweat before it turns into a breeding ground.
• Air Them Out: Never put warm, damp shoes directly into a plastic bin. Let them air dry in a well-ventilated room for at least 4 hours first. I use an open-concept wire rack instead of closed cabinets.
• Cedar Shoe Trees: For leather sneakers, insert cedar shoe trees immediately after taking them off. Cedar naturally absorbs moisture and contains anti-fungal oils. A pair of Stratton cedar trees costs around $25 and lasts for years.

Rotate your shoes daily. Wearing the same pair two days in a row doesn't give the internal foam enough time to dry out completely. Give each pair at least 24 hours to breathe between wears. This simple habit extends the life of your sneakers and keeps the interior environment hostile to mold growth. Taking these small steps saves you hours of scrubbing later. It's much easier to prevent the spores from landing than it is to evict them once they move in.

FAQ

Can I just throw moldy sneakers in the washing machine?

No, you shouldn't. The washing machine won't get hot enough to kill the mold spores, and you'll just contaminate your drum. Plus, the heavy agitation and prolonged soaking will destroy the structural glue holding your midsoles together. Always hand-clean moldy shoes to protect both your footwear and your appliances.

Does bleach work on white canvas shoes?

Bleach will kill the mold, but it's incredibly harsh on fabrics. It weakens the cotton fibers and often leaves a permanent yellow tint on white rubber and stitching. I highly recommend using an oxygen-based cleaner or a dedicated mold remover like RMR-86 instead. They are much safer for the longevity of your sneakers.

How do I know if the mold has ruined the shoe permanently?

If the mold has eaten through the top layer of leather or caused the canvas to rot and tear, the shoe is done. You'll also notice a deep, musty smell that won't leave even after a thorough cleaning. When the structural integrity is compromised or the odor persists for weeks, it's time to throw them away.

Is black mold on shoes dangerous to my health?

Yes, breathing in concentrated mold spores can trigger allergic reactions and asthma attacks. While the mold on your shoes is usually common household strains like Cladosporium, you should still treat it with caution. Always wear an N95 mask and clean the shoes outside to avoid inhaling the airborne spores.