Most of the damage to a hardwood floor doesn’t come from wear. It comes from cleaning. What you actually clean is the clear finish on top of the wood, and the wrong product or too much water breaks that finish down faster than foot traffic does.

Here’s what to use, what to skip, and the habits that help a finish last.

Know what you’re cleaning

Most hardwood floors installed or refinished in the last few decades have a surface finish, usually polyurethane. It sits on top of the wood like a clear coat. Look after the finish and the wood underneath stays protected.

Some floors have a penetrating oil or hardwax oil finish instead. Those need the cleaner their maker recommends. If you don’t know which finish you have, ask whoever installed or last refinished the floor.

The routine that works

Dry clean first. Sweep, dust mop, or vacuum before anything wet touches the floor. Grit under a shoe acts like sandpaper. If you vacuum, use the hard floor setting and turn the beater bar off.
Then clean damp, not wet. Use a cleaner made for finished wood floors and labeled pH neutral. Spray it lightly on the floor or on a microfiber pad. If liquid is standing on the boards, you used too much.
Wipe spills right away. Blot with a dry or barely damp cloth. Don’t let water, pet accidents, or plant overflow sit on the floor.

Busy rooms like kitchens and entries need a dry clean every few days and a damp clean every week or two. Quiet rooms need much less.

What to keep off your floor

Steam mops. Heat and moisture push water into the seams and under the finish. The finish can turn cloudy and the boards can swell.
Vinegar and water. It’s acidic. Over time it dulls the finish and leaves a residue.
Ammonia, bleach, and all-purpose cleaners. They can strip the finish.
Oil soaps and furniture polish. They leave a film that holds dirt, and it can stop a future coat of finish from bonding.
Wax and mop-and-shine products on a polyurethane floor. They build up, look cloudy, and block a future recoat. Removing the buildup often means sanding.
A bucket and string mop. Too much water.
Scouring pads and steel wool. They scratch the finish.

Habits that protect the finish

Mats at every outside door. They catch grit before it reaches the floor. Choose mats and rug pads labeled safe for hardwood, because some rubber backings can discolor a finish.
Felt pads under furniture. Put them on chair and table legs, and replace them when they wear thin or pick up grit.
Lift, don’t drag. Carry furniture and appliances. Dragging them is how most deep scratches happen.
Trim pet nails. Short nails leave far fewer marks.
Manage sunlight. Sun changes the color of wood over time. Blinds or window film slow it down, and moving rugs now and then helps the floor age evenly.
Keep humidity steady. Wood swells in humid summers and shrinks in dry winters. Big swings open gaps between boards and can cup them. Most flooring makers publish a humidity range in their warranty, and a humidifier or dehumidifier keeps your home inside it.

When cleaning stops working

No cleaner can fix a finish that has worn through. Watch for gray or dark paths where people walk most, and for spots where a drop of water soaks in and darkens the wood instead of beading on top.

If only the finish is worn, a fresh coat of finish may be enough. If the wood itself is scratched, stained, or gray, it needs to be sanded and refinished. Our guide on how to tell if your hardwood can be refinished walks through the check, and our sanding and refinishing page explains the work.

If your floor is past the point where cleaning helps, a free written estimate tells you what it needs and what it will cost.