Let’s be honest – cleaning mildew from fabric can be frustrating. Mildew is a type of fungus that thrives in damp, humid environments, and it often shows up on fabric as white or gray streaks or powdery patches. It may not look as dramatic as other stains, but it can smell musty and be tough to remove if left untreated.
The good news? You can often get rid of mildew using simple household ingredients – and a little sunshine.
Homemade Fabric Mildew Remover (Vinegar Method)
This method is great for light mildew stains on:
Curtains or drapes
Upholstery
Outdoor cushions
Clothing (non-delicate)
What you’ll need:
Spray bottle
Distilled white vinegar
Water
Instructions:
Mix equal parts vinegar and water (1:1) in a spray bottle.
Lightly spray the mildewed fabric – don’t soak it.
Let the fabric air dry. If possible, place it in direct sunlight (which helps kill mildew).
If the smell lingers or the mildew is still visible, repeat the process.
For washable items, toss them in the laundry afterward.
Always spot-test a hidden area first to make sure the fabric won’t fade.
Borax Method for Machine-Washable Clothing
If the mildew is heavier or smells strong, this method is a little stronger than vinegar but still gentle enough for most washable fabrics.
What you’ll need:
2 tablespoons of borax
4 cups of warm water
A soft brush or cloth
Instructions:
Dissolve borax in warm water.
Soak the mildewed area for 10 – 15 minutes.
Gently scrub the stain.
Rinse thoroughly.
Wash in the machine with detergent, using the warmest water safe for the fabric.
Dry clean only? Let your cleaner know the item has a mildew stain so they can treat it properly.
Commercial Mildew Removers (for Outdoor Fabrics)
If vinegar doesn’t cut it for patio cushions, umbrellas, or canvas, you might need a product made specifically for mildew.
Try something like:
3M Mildew Stain Remover
Star brite Mildew Stain Remover
Instructions:
Spray according to the label.
Let it sit for the recommended time.
Rinse or wipe clean.
Always wear gloves and work outdoors or in a well-ventilated space.
Extra Cleaning Mildew from Fabric Tips
Go synthetic: In humid areas, synthetic fabrics (like polyester or acrylic) resist mildew better than cotton or linen.
Scrub outside: Brushing mildew indoors can release spores that might settle elsewhere.
Use a mask if needed: If there’s a lot of visible mildew, a mask can help prevent breathing in any spores while you scrub.
Cleaning mildew from fabric is usually simple with the right approach – especially if you catch it early. Whether you choose vinegar, borax, or a commercial cleaner, your fabrics can be fresh and mildew-free with just a little effort. Prevention helps too: dry damp items quickly, use fans or dehumidifiers in humid spaces, and store fabrics in a dry place whenever possible.
