What to do with a wool rug at home
- Vacuum regularly Under furniture and on the underside too, because moths more often damage wool in dark places.
- Turn the rug From time to time turn the rug so that the parts people walk on change and it wears evenly.
- Protect it from direct sun Light dries the fibre and fades the colours.
- Blot up a fresh stain Press a clean, absorbent cloth on it lightly and do not rub. When the excess liquid has been blotted up, put on a clean cloth and press it down with something heavy until the spot has dried.
- Blood only with cold water Hot water sets a blood stain.
- Test the product first Before using any product, try it on a hidden spot and check that the colour does not bleed.
Sources: Canadian Conservation Institute, “Basic care: carpets and rugs” (turning, light, blotting a stain); WSU PestSense (moths); University of Georgia Extension (blood, testing a product). Checked 10.11.2026.
Why wool must not be washed in hot water
The surface of a wool fibre is covered with tiny scales. The University of Wisconsin Extension (UW-Extension) guide “The Science of Felting” explains that in hot water the scales lift, and if the wool is rubbed or moved at the same time, the fibres catch together. This is how felt forms: the material becomes denser and shrinks.
A washing machine provides exactly these two things: warm water and movement. So a wool rug can come out of a machine smaller and denser. This process is usually irreversible.
Source: UW-Extension, “The Science of Felting” (https://oconto.extension.wisc.edu/files/2013/09/The-Science-of-Felting.pdf). Checked 10.11.2026.
Moisture, heat and dyes
In its rug care guidelines, the Canadian Conservation Institute writes that heat strips wool of its natural oils and weakens the threads, while high humidity can damage fibres and make dyes bleed. So do not dry a wool rug on a radiator, by a stove or with a hair dryer, and do not leave it damp.
The other risk is the dye bleeding. For a wool or hand-made rug the colourfastness must be tested on a hidden spot before wetting it, because dyes can bleed. Bled dye can get onto the light parts of the pattern.
Sources: Canadian Conservation Institute (https://www.canada.ca/en/conservation-institute/services/care-objects/textiles-costumes/basic-care-carpets-rugs.html); University of Georgia Extension on the colourfastness test. Checked 10.11.2026.
What not to do with a wool rug
| What not to do | What can happen |
|---|---|
| Wash it in a washing machine | Warm water and movement felt the wool, the rug shrinks |
| Soak it in the bath | The dye can bleed, the rug stays damp for a long time |
| Clean it with hot water or steam | Felting; the fibres lose their oils and become weaker |
| Use shop-bought carpet shampoo | Conservators do not advise it for important rugs: dirt then sticks more easily |
| Rub a stain | The stain goes deeper |
| Use chlorine bleach | The colour changes |
| Dry it on a radiator | Heat weakens the fibres |
Sources: UW-Extension, Canadian Conservation Institute, University of Georgia Extension. Checked 10.11.2026.
Moths in a wool rug
The Washington State University pest page writes that clothes moth larvae feed on wool and other materials of animal origin and avoid light. So the parts of a rug under a sofa and rugs kept in a dark place are more at risk. The advice is to vacuum and clean these places regularly, and to clean the rug before storing it. Insecticides are not an effective fix: in the long term, finding and removing the source helps.
If there are live moth larvae in the rug, it is a pest control job, not rug washing.
Source: WSU PestSense, Casemaking clothes moth (https://pestsense.cahnrs.wsu.edu/fact-sheet/casemaking-clothes-moth/). Checked 10.11.2026.
When to send a wool rug for cleaning
If the rug is grey across the whole area, if the stain is large or old, if there is urine or smell, or if the rug is hand-made or antique, home remedies usually do not help. A wool rug needs controlled wet cleaning and complete drying, which a living room floor does not give.
In Riga and the Riga region a wool rug is cleaned only with pick-up: a wool or cotton rug (with pick-up) costs from €10/m², and pick-up and return in Riga is €10. Example: a 2 × 3 m wool rug is 6 m² × €10 = from €60 and pick-up and return €10, so from €70 in total. The minimum order is €45: if the total is lower, you pay €45. More: wool rug cleaning.
Sources
- Wool scales lift in hot water and catch together with rubbing; the material shrinks and becomes dense checked 10 November 2026
- Heat strips wool of oils; moisture makes dyes bleed; light fades; turn the rug; no shampoos; blot a stain; storage checked 10 November 2026
- Moth larvae eat wool and avoid light; insecticides are not effective; clean before storage checked 10 November 2026
- Blood stain: cold water, heat sets it checked 7 November 2026
- Test a product on a hidden spot checked 7 November 2026
- Chlorine bleach changes the colour checked 7 November 2026
- Care symbols: a cross means “do not” checked 7 November 2026
