How to clean a wool rug or wool carpet without damaging it

Step by step: how to clean a wool rug or wool carpet without damaging it

1. 1

   Check the label and the rug type

   Look for a care label on the back. Hand-knotted, antique, silk-blend and viscose-blend rugs should go to a professional rug cleaner. Machine-made and tufted wool rugs can be spot cleaned at home with the steps below.

2. 2

   Shake out or beat the grit

   Take small rugs outside and shake them hard. Hang larger ones over a sturdy railing, pile side in, and beat the back with a rug beater or broom handle for a few minutes. You will see a surprising cloud of fine grit, which is what wears wool fibers down.

3. 3

   Vacuum both sides with the beater bar off

   Vacuum the back of the rug first to shake more grit loose, then flip it and vacuum the pile in the direction it lies. Use suction only or the bare-floor setting, because a spinning brush roll fuzzes wool and pulls at fringe. Expect some fluff in the canister: shedding is normal for wool.

4. 4

   Blot spills right away

   Scoop up solids with a spoon and blot liquids with a white towel, pressing straight down. Work from the outer edge of the spot toward the center. Never rub, which felts and fuzzes wool.

5. 5

   Spot clean with a wool-safe detergent

   Mix a few drops of pH-neutral wool detergent into 2 cups of cool or lukewarm water. Test it on a corner first, then dab a little onto the stain with a white cloth and blot. Repeat until no more color transfers to the cloth.

6. 6

   Rinse with plain water

   Mist the spot lightly with plain water and blot again until the cloth comes up clean. Detergent left in wool attracts dirt and can leave a ring.

7. 7

   Dry it fast

   Press dry towels on the spot, standing on them to squeeze out water. Then point a fan at it, or prop the rug up so air reaches the back. Wool can take a day to dry and can smell musty or brown if it stays damp, so do not put furniture back until it is dry to the touch on both sides.

8. 8

   Brush the pile back into place

   Once dry, brush the pile gently with a soft brush in the direction it naturally lies. Fluff matted spots with your fingers.

What should you never use on a wool rug?

Never use bleach of any kind, enzyme cleaners, ammonia, hot water, or a carpet machine that soaks the rug. Wool is a protein fiber, so cleaners designed to break down proteins and stains can damage it.

• The Woolmark Company says to avoid heavy-duty detergents, “bio” detergents containing enzymes and anything containing bleach, and never to use chlorine or oxygen bleach on wool. That rules out many pet stain sprays and oxygen powders.
• The University of Georgia Extension warns that ammonia damages wool and silk, and should only be used diluted and sparingly if at all.
• Hot water and scrubbing together felt wool and can shrink or distort a rug. Use cool or lukewarm water and blot.
• Overwetting can make dyes bleed and leave brown stains as water wicks up from the backing.

Look for products with the WoolSafe mark. The WoolSafe Organisation certifies carpet care products as suitable for use on wool, and lists approved carpet cleaners and rug care specialists.

How to treat common stains on wool

Blot first, then use the mildest treatment that works, testing on a hidden spot. Woolmark’s stain guide gives these wool-specific methods:

Woolmark also notes that many stain tips online are written for cotton and synthetics and are not all suitable for wool. For pet accidents, blot or scrape, use only wool detergent and water, and call a rug cleaner; our guide on how to get dog poop out of carpet covers the cleanup; on wool, skip the enzyme cleaner step.

When to send a wool rug to a professional

Send it out for a full wash every one to three years, and any time it has a pet accident, a large spill, or a musty smell. Home spot cleaning keeps a wool rug tidy, but it cannot rinse grit out of the foundation.

Rug makers lean heavily on professional cleaning. Nourison’s rug care guide recommends a professional service for many of its rug types, says shedding is normal for wool and other natural fibers, and recommends a rug pad under every rug. Rug cleaners wash wool rugs in a controlled bath and dry them flat in a drying room, which is hard to copy at home. For wall-to-wall wool carpet, hire a carpet cleaner who uses low-moisture or wool-safe methods, and see how to clean a carpet for routine care.

Mistakes to avoid

• Vacuuming with the beater bar spinning, which fuzzes the pile and chews up fringe.
• Using an oxygen or enzyme pet stain cleaner, which can weaken and discolor wool.
• Soaking a spot with a carpet machine so water reaches the backing and leaves brown rings.
• Rubbing a stain, which felts the fibers and spreads the mark.
• Putting the rug back on a hard floor before the back is fully dry.
• Hanging a wet wool rug in direct sun for hours, which can fade the dyes.