Gym floor mats and studio cloths live a hard life. They take sweat, skin oil, shoe grit and the fine rubber powder that comes off matting, and they take it every day. Most of them get a wipe and a stack, and the wash they actually need gets put off until the smell makes the decision for somebody.
What a gym floor puts into a mat
A gym floor is a grit machine. Shoes bring in road dust and whatever is on the pavement outside, the floor itself sheds a fine rubber powder, and everything that lands on a mat gets pressed into it by body weight.
On top of that there is sweat, which is mostly water and salt, and skin oil, which is the part that stays. Water evaporates on its own. Oil does not, and it holds onto the dust that lands on it.
That is the whole problem in one line. A mat does not get dirty the way a shirt gets dirty. It builds a layer of oil with grit set into it, and a wipe with a damp cloth moves the top of that layer around without removing much of it.
The cloths used to wipe the mats then carry the same mixture, which is why a bucket of studio cloths usually smells worse than the mats do.
Foam, vinyl and the difference it makes
Closed cell foam mats, the dense ones with a sealed surface, do not absorb much. Their problem is surface film, and they want wiping rather than washing.
Open cell foam and anything with a fabric face is a different object. It takes liquid in, holds it, and gives it back slowly, which is why those are the ones that start smelling first.
Vinyl covered mats sit in between. The cover keeps liquid out until a seam splits, and then the inside gets wet and stays wet, and no amount of surface cleaning reaches it.
Before you wash anything, work out what you have. A fabric faced mat or a removable cover is washable. A sealed foam slab is not, and putting one in a drum will crease or tear it.
Studio cloths and the cleaner they carry
Studio cloths take on more than sweat. They carry whatever spray is used on the equipment, and that residue builds up in the fibres wash after wash.
Microfibre is the usual choice and it is the one that suffers most. The fine split fibres that let it grab dust also hold onto softener, oil and cleaner residue, and once they are loaded the cloth stops collecting anything at all.
Keep softener well away from them. Softener works by coating fibres, and a coated microfibre cloth is a rag. The same goes for dryer sheets, which do the same job from the other end.
Wash them on their own, or at least away from cotton towels, because microfibre will pull lint out of cotton and hold onto it permanently.
Why the smell comes back
A cloth or a cover that smells fine when dry and sour within an hour of use has oil left in it. The smell is not on the surface, it is down in the fibre, and warm damp conditions bring it straight back out.
This happens when the wash water is too cool for the soil, when the load is packed so tight that nothing moves, or when there is so much detergent that the rinse cannot clear it.
Residue is the quiet culprit. Detergent left in a fabric attracts soil faster next time, and each cycle leaves a little more behind than the one before it.
The fix is a proper warm wash with room in the drum and a second rinse. Not more detergent. Almost never more detergent.
Washing a mat without wrecking it
Take covers off where they come off. A zipped cover washes like any heavy fabric item, and it is the only part that needed washing in the first place.
For a fabric faced mat that has to go in whole, knock the loose grit off outdoors first. Grit that goes into the drum ends up back in the fibres and in everything else in the load.
Use a large drum and run it alone. A mat holds a lot of water and it will unbalance a small machine, and a machine fighting an unbalanced load is rough on the mat as well.
Warm water, ordinary detergent, no softener. Then a second rinse, because a thick fabric holds detergent the way a sponge holds anything else.
Drying is where mats are lost
Heat is what kills foam. It goes hard, then brittle, then it crumbles along the folds, and nothing brings it back.
Dry covers on low and pull them out slightly damp. Dry foam flat and in moving air, turning it once, and accept that it takes longer than you want it to.
A mat that goes back into a stack while the core is still damp will smell within days. Stacking traps the last of the moisture exactly where air cannot reach it.
Stand mats on edge to finish rather than laying them flat on each other. Air gets to both faces and the drying time roughly halves.
The small gear nobody washes
Resistance bands, hand wraps, grip socks and the strap on a mat carrier all live in the same bag, and none of them get washed on anything resembling a schedule.
Fabric bands and wraps wash cool in a mesh bag with the hook and loop fastenings closed, so they do not grab onto everything else in the drum. Rubber bands are a wipe and air dry job only, because detergent and heat both make rubber brittle before its time.
Grip socks are the item most often ruined at the drying stage. The rubber dots on the sole soften in heat, then flatten under their own weight, and after that a grip sock is only a sock.
Wraps hold more sweat than almost anything else in the bag, because they are worn tight and they are rarely spread out afterwards. Rolled up damp in a corner, they sour faster than a towel would.
The bag itself is usually the worst of the lot. Empty it out, turn it inside out if it will go, wash it cool, and dry it open and upside down so the corners get a chance.
None of this takes long. It only takes remembering, which is why most places attach it to whichever week the covers get washed rather than treating it as a job of its own.
Common questions about gym floor
Can gym floor mats go in a washing machine?
Fabric faced mats and removable covers can, in a large drum, on their own. Sealed foam slabs and thick vinyl mats cannot, and a drum will crease or tear them. Check for a zip first, because a removable cover solves the problem without risking the core.
Why do the cloths smell even after washing?
Because oil is still in them. Cool water and a crowded drum both leave oil behind, and softener seals what is left in place. Wash them warm, with space, with no softener, and add a rinse. A cloth that has had years of softener may not come back at all.
Should mats and cloths go in the same load?
No. Mats carry grit and cloths carry residue, and mixing them grinds the grit into the cloth faces. Mats also soak up most of the water in the drum, which leaves the cloths under washed even when everything looks fine.
How often is often enough?
More often than most places manage. Cloths want washing after each use, because a damp cloth left in a bucket sours quickly. Covers want it on whatever schedule you can actually keep, and the honest answer is that a routine you follow beats a better one you skip.
The New Haven part
Coastal air here carries salt, and salt comes in on shoes along with whatever is on the road. Through winter that is grit and road treatment, and both of those are hard on a mat surface.
Summers are humid, and humidity is the reason a mat that seemed fine in March turns sour in July. The moisture that never fully left the core finally has something to work with.
Autumn is the damp stretch, when shoes come in wet and the floor stays tacky for longer. Anything that lands on a mat in those weeks sits in a film rather than drying off.
A gym floor in this climate never really gets a dry season, so the drying end of the job matters more here than the washing end does.
Where to wash the covers
Bring the covers and the cloths in together and run them in a drum that gives them room.
The machines at our self-service laundry on Foxon Boulevard hold the water volume and drum size a soaked mat cover needs in order to move freely.
Our machines and the store are cleaned daily.
Our wash-dry-fold service covers the everyday laundry.
For general guidance, The American Cleaning Institute publishes a fabric care guide that is a useful cross-check.
The short version
Gym floor mats and studio cloths collect sweat, skin oil, shoe grit and rubber dust, and the oil is the part that stays. Wiping moves that film around rather than removing it, which is why the smell comes back within an hour of use. Work out what you have first, because removable covers and fabric faced mats wash and sealed foam does not. Wash warm, alone, in a large drum, with no softener and a second rinse. Dry covers low and pull them out slightly damp, dry foam flat in moving air, and stand mats on edge rather than stacking them while the core is still wet.
WaveMAX New Haven is at 466 Foxon Blvd, easy to reach from New Haven and the surrounding area. If you have a load that will not fit at home, call us at 917-861-9535.