Quick answer: to clean an outdoor rug, shake or vacuum off loose dirt, scrub it with warm water and a few drops of dish soap using a soft brush, hose it until the water runs clear, then stand it upright in the sun and flip it until both sides are dry. For mildew, work baking soda and vinegar into the spots first. Most polypropylene rugs are clean in under an hour and dry in two to four.
- Shake and vacuum both sides.
- Scrub with dish soap and warm water.
- Rinse with a hose until the runoff is clear.
- Treat mildew or stains that remain.
- Dry upright, flipping once.
What You Need to Clean an Outdoor Rug
A garden hose with a spray nozzle, a bucket of warm water, mild dish soap, a soft-bristle brush (long-handled saves your knees), baking soda and white vinegar for mildew, microfiber towels and rubber gloves. No hose? A spray bottle and bucket work too.
Check the care label first. Polypropylene (olefin), polyester and recycled PET rugs all take the method below; natural-fiber rugs such as jute should never be soaked, so treat those like a jute rug. Test any cleaner on a hidden corner.
How to Clean an Outdoor Rug in 5 Steps
- Shake, beat or vacuum both sides while the rug is dry; wet grit is far harder to remove. A leaf blower works on large rugs.
- Lay it flat on a clean hard surface such as a driveway or patio, and wet it down with the hose.
- Scrub with soapy water. Mix a few drops of dish soap into a bucket of warm water and work it in with the soft brush, following the weave. Add extra soap directly to greasy spots.
- Rinse until the water runs clear, back and front. Soap left in the fibers attracts dirt and dries stiff.
- Dry upright. Drape it over a railing or stand it on end, and flip it once the top is dry. A rug left flat on concrete traps water underneath and can mildew within a day.
How to Clean Mold and Mildew Off an Outdoor Rug
Black or green spots on the underside, a musty smell or a slimy patch under a planter all mean mildew. Treat it before the full wash so the spores do not spread.
Baking soda and vinegar method (safe for every fiber)
- Sprinkle baking soda generously over the mildewed area and let it sit for 15 to 30 minutes.
- Mix one part white vinegar with three parts water in a spray bottle and spray the baking soda until it fizzes.
- Scrub with the soft brush, let it sit another 10 minutes, then rinse and continue with the normal wash.
Diluted bleach method (solution-dyed polypropylene only)
Solution-dyed polypropylene has the color locked into the fiber, so it can take one part bleach to ten parts water, scrubbed in, left five minutes and rinsed thoroughly. Printed or surface-dyed rugs can lose color, so test a hidden corner first, and never bleach natural fibers.
Do Outdoor Rugs Get Moldy? How to Prevent It
Yes. The cause is almost always moisture trapped between the rug and the surface below; polypropylene does not feed mold, but the dirt and pollen caught in a damp weave do. Three habits stop it:
- Use an open-weave outdoor rug pad so air and water can move underneath. Our rug pad guide covers outdoor-rated pads.
- Lift or flip the rug after heavy rain, especially on non-draining surfaces such as sealed concrete or a solid deck.
- Roll it up before a storm or a long wet stretch. If wind is also a problem, see how to keep an outdoor rug from blowing away.
How to Clean an Outdoor Rug Without a Hose
Balcony rugs get the same treatment at a smaller scale. Vacuum, then fill a spray bottle with warm water and a drop of dish soap. Spray one section at a time, scrub, and blot with a wrung-out microfiber towel, rinsing the towel in a small bucket as you go. A no-rinse carpet cleaner skips the rinsing step. Hang the rug over the railing to dry.
Can You Pressure Wash or Machine Wash an Outdoor Rug?
Pressure washer: yes for polypropylene, on the lowest setting with a wide fan tip held 12 inches or more away and kept moving; a concentrated jet frays the weave. Never pressure wash a natural-fiber or braided rug.
Washing machine: only if the label says so. Small flatwoven mats and dedicated washable rugs are fine on a cold, gentle cycle; a 5x8 or larger polypropylene rug is not.
How to Remove Specific Stains From an Outdoor Rug
| Stain | What to do |
|---|---|
| Bird droppings | Let them dry, scrape off with a dull blade, then wash. Wet droppings smear deeper. |
| Grease, sunscreen, food | Dish soap straight on the spot, worked in with the brush, then rinsed. |
| Rust from furniture feet | Lemon juice and salt, left 30 minutes in the sun, then rinsed. Stubborn marks need an oxalic-acid rust remover for textiles; vinegar alone is rarely enough. |
| Pet urine | Rinse, then an enzyme cleaner for the odor; our pet stain guide applies outdoors too. |
How to Dry an Outdoor Rug After Rain
After a downpour, drape the rug over a railing or fence so both faces get air, and flip it once the top is dry. A soaked polypropylene rug dries in two to four hours of sun; thick rugs take a day. Squeeze the center before laying it back down: if water comes out, it is not done.
Weekly Maintenance and Winter Storage
In season, sweep or shake the rug weekly, hose it every two to four weeks, and flip it after rain. At season's end, give it the full wash, dry it for a full day, and check the back for mildew. Then roll it, never fold it (folds crease polypropylene permanently), wrap it in a breathable sheet or canvas bag, and store it off the ground in a dry garage. Never seal it in plastic; a slightly damp rug will mold inside an airtight bag. In a rodent-prone space, use a lidded bin with a few ventilation holes.
Replace the rug when the backing cracks, the edges fray, or mildew keeps returning; our outdoor rug materials guide explains which fibers last longest.
Outdoor Rug Cleaning FAQs
How often should you clean an outdoor rug?
Can you use a pressure washer on an outdoor rug?
Can you put an outdoor rug in the washing machine?
What kills mildew on an outdoor rug?
About RugKnots
RugKnots is a family-owned rug company in Hagerstown, Maryland, importing and selling hand-knotted rugs since 1987. We hand-inspect every order, offer free U.S. shipping and a 30-day return guarantee. Questions? Reach out and a real person will reply within one business day.
