The best outdoor rugs are typically made from a synthetic material. Best for: rainy, damp, or humid climates. Polypropylene is the most popular outdoor rug material. It is stain-resistant, easy to clean, won't fade from sunlight, and can handle high moisture and heavy foot traffic.
Because outdoor rugs are made of synthetic, durable, all-weather materials, and are often very affordable, they're a good option for indoors, too, especially in high-traffic areas and mudrooms. Hand- or machine-made. ... Avoid fabric borders, which can deteriorate faster than the rest of the rug.
They are easy to clean and resists mold. To ensure that your area rug stays free of mold growth after washing, hang it over a porch railing in the sunlight. If you don't have a railing, lay the rug out in the sun to dry and flip it over to make sure both sides dry thoroughly.
If your rug is outside in rain or heavy dew, make sure to flip it so it can dry both front and back. When the outdoor entertaining season is through, make sure your rug is dry. Then roll it up and store in a covered area to avoid fading.