How to Get Mildew Smell Out of Towels
Musty, mildew-smelling towels are caused by mildew (a type of mould) growing in the towel fibres. The root cause is damp towels sitting too long before drying — either because they were left wet after use, or because they were washed with detergent buildup that leaves residue in the fibres that traps moisture. The fix is straightforward: kill the mildew and strip the residue.
The Two-Wash Reset Method
Wash 1: Vinegar
- Wash the smelly towels in hot water with 1 cup of white vinegar — no detergent
- The acetic acid in vinegar kills mildew, bacteria, and breaks down the soapy residue that traps moisture in the fibres
- Use the hottest water setting your towels allow
Wash 2: Baking Soda
- Immediately after the vinegar wash (without drying first), run a second hot wash with 1/2 cup of baking soda — again, no detergent
- The baking soda neutralizes any remaining vinegar, deodorizes further, and lifts additional residue
Dry Completely and Immediately
- Put the towels straight into the dryer on high heat — do not leave them sitting in the drum
- Dry completely — even slightly damp towels will re-develop mildew smell within hours
- Add a few dryer balls to increase air circulation and speed drying time
Why Towels Develop Mildew Smell in the First Place
- Too much detergent: Excess detergent leaves residue in the fibres that traps moisture and feeds mildew. Use half the recommended amount for towels.
- Fabric softener: Coats fibres with a residue that reduces absorbency and traps moisture. Avoid fabric softener on towels.
- Not drying quickly enough after use: Hang towels fully spread open after use, not folded or bunched. A towel needs 20–30 minutes to dry in a ventilated bathroom. Install a towel bar rather than a hook for better air circulation.
Preventing Mildew Smell Long-Term
- Use less detergent — towel fibre residue is the most common cause
- Wash towels every 3–4 uses
- Never put damp towels in the laundry hamper — hang until fully dry first
- Run an occasional vinegar wash (without detergent) every 1–2 months as maintenance
Book a Maidless deep clean at maidless.ca — 4.9★, 100+ reviews, vetted cleaners across Toronto.