Why Pool Towels Start Smelling Musty
Pool towels deal with more buildup than regular bath towels. They absorb chlorinated water, sweat, sunscreen, tanning oil, body lotion, and dirt from lounge chairs, grass, patios, and pool decks. Then, because humans enjoy creating problems for themselves, those wet towels often get thrown into a hamper, beach bag, laundry basket, or car trunk and left there.
That damp environment is exactly where mildew odor begins. Even if the towel does not look dirty, bacteria and residue can cling to the fibers. Over time, detergent buildup and fabric softener can trap those smells deeper inside the towel. That is why a towel can come out of the washer smelling okay, then start smelling sour again as soon as it gets damp.
To fix the problem, you need to remove the buildup, wash towels with enough water and agitation, and dry them quickly and completely.
Step 1: Do Not Let Wet Towels Sit in a Pile
The best way to prevent smelly towels is to stop mildew before it starts. After swimming, hang pool towels over a railing, drying rack, clothesline, chair, or shower rod so air can circulate around them. Even if you are not washing them right away, letting them dry first makes a huge difference.
Avoid tossing wet towels into a closed hamper, plastic bag, or laundry basket. That creates a warm, damp odor factory. The towel does not need an incubator. It is already dramatic enough.
If towels are soaked after a pool day, give them a quick shake outside and hang them up until laundry time. This one habit can prevent most of the sour smell people battle all summer.
Step 2: Wash Pool Towels Separately
Pool towels should be washed separately from delicate clothing, jeans, and heavily soiled items. Towels need room to move in the washer. If the machine is packed too tightly, detergent and water cannot circulate properly, and odors stay trapped in the fibers.
A good rule: fill the washer loosely, not tightly. Towels should be able to tumble or agitate freely. If you have a mountain of pool towels after a weekend swim party, split them into two loads. Yes, this is mildly annoying. So is rewashing towels that still smell like mildew.
Washing towels separately also helps prevent lint transfer and allows you to use a towel-friendly wash cycle.
Step 3: Use Warm or Hot Water When the Care Label Allows
For most white or light-colored cotton towels, warm or hot water can help remove body oils, sunscreen, and odor-causing buildup. Always check the care label first, especially for brightly colored towels that may fade.
Warm water is usually a safe choice for regular pool towel washing. Hot water can be useful for deep cleaning white towels or towels with stubborn odor, but it may cause some colors to fade faster.
Cold water can work for lightly used towels, but if your main issue is sour-smelling pool towels, warm water is usually more effective.
Step 4: Do Not Use Too Much Detergent
It feels logical to add extra detergent when towels smell bad. Naturally, logic betrays us again. Too much detergent can actually make towels smell worse over time.
When detergent does not rinse out completely, it leaves residue behind. That residue coats towel fibers, traps odor, reduces absorbency, and makes towels feel stiff or waxy. The result is a towel that technically got washed but still smells like betrayal.
Use the recommended amount of detergent for your load size and soil level. If you have a high-efficiency washer, use HE detergent and follow the measurements carefully. More soap does not mean more clean.
Step 5: Skip Fabric Softener
Fabric softener may make towels feel smooth at first, but it leaves a coating on the fibers. That coating reduces absorbency and can trap odors, sunscreen residue, and detergent buildup. For pool towels, fabric softener is usually not your friend.
If your towels feel stiff, try using less detergent, adding an extra rinse cycle, or drying them properly instead. A clean towel with good airflow will feel fresher than one coated in softener.
Dryer sheets can create a similar issue, so use them sparingly or skip them for towel loads.
Step 6: Use White Vinegar for Odor Removal
White vinegar can help break down detergent residue and neutralize musty towel smells. Add about one cup of white vinegar to the rinse cycle, or place it in the fabric softener dispenser if your washer has one.
For very smelly towels, run a wash cycle with warm water and vinegar but no detergent. Then run a second cycle with detergent. This helps remove buildup first, then cleans the towels more effectively.
Important: never mix vinegar with bleach. That combination can create harmful fumes. Laundry should smell clean, not become a science experiment with consequences.
Step 7: Try Baking Soda for Extra Freshness
Baking soda can help with odor control and freshness. Add about half a cup of baking soda directly into the washer drum with your towels before starting the cycle. Then wash with detergent as usual.
Baking soda is especially helpful when towels have a sour smell or when they have been sitting damp too long. It is not magic, but it is useful. Which is more than can be said for most things hiding in the laundry room.
Step 8: Add an Extra Rinse Cycle
If towels still smell after washing, detergent or residue may still be stuck in the fibers. An extra rinse cycle helps remove leftover soap, vinegar, baking soda, sunscreen, chlorine residue, and body oils.
This is especially helpful for thick beach towels and oversized pool towels. The thicker the towel, the harder it can be to rinse completely.
If your washer has a "deep rinse" or "extra rinse" setting, use it for towel loads during pool season.
Step 9: Dry Towels Completely
A towel that is even slightly damp can develop that musty smell again. After washing, move towels to the dryer right away. Do not let them sit in the washer for hours. That is how clean laundry becomes suspicious laundry.
Dry towels on a medium or high heat setting if the care label allows. Make sure they are fully dry before folding and storing them. Thick towels may need more time than regular laundry.
If you prefer air drying, hang towels in direct sunlight when possible. Sun and airflow are excellent for freshness. Just make sure towels are completely dry before putting them away.
Step 10: Store Pool Towels in a Dry, Ventilated Place
Once towels are clean and dry, store them somewhere cool and dry. Avoid stuffing them into a damp bathroom cabinet, outdoor storage bin, or closed pool box unless they are completely dry and the storage area has good airflow.
For pool season, consider keeping clean towels in an open shelf, basket, or linen closet. If you store towels near the pool, use a container that protects them from dirt and weather but does not trap moisture.
Fresh towels need dry storage. Otherwise, mildew will return like it pays rent.
How Often Should You Wash Pool Towels?
Pool towels should be washed after every few uses, but the timing depends on how they are used. If a towel is soaked, covered in sunscreen, dropped on the ground, or used by multiple people, wash it after one use.
If it was lightly used and hung up to dry completely, you may be able to use it again before washing. The key is smell and dryness. If it smells musty, feels stiff, or was left damp, wash it.
For families using pool towels daily, a regular towel laundry routine can prevent odor from building up.
When to Deep Clean Pool Towels
If your towels still smell bad after a normal wash, it may be time for a deeper clean. Wash towels with warm water and white vinegar, then wash again with detergent and baking soda. Avoid fabric softener, and use an extra rinse.
You do not need to deep clean every week. Too much harsh washing can wear towels out faster. Use deep cleaning when towels smell sour, feel coated, or no longer absorb water well.
Let Tip Top Laundry Handle the Towel Load
Pool season should be about relaxing, not battling a mountain of damp towels. If your family goes through stacks of pool towels every week, Tip Top Laundry can help keep them fresh, clean, folded, and ready for the next swim day.
From everyday laundry to bulky towel loads, professional wash and fold service saves time and helps keep your summer routine simple. Because nobody’s dream summer includes sniff-testing towels in the laundry room like a detective in a very sad mystery.
Final Takeaway
To keep pool towels smelling clean, dry them quickly after use, wash them with the right amount of detergent, skip fabric softener, use vinegar or baking soda when needed, and make sure they dry completely before storing.
Clean towels are not just nicer to use. They last longer, absorb better, and make pool days feel fresher. With the right laundry routine, your pool towels can smell like summer instead of mildew’s personal diary.