Using a regular indoor rug under your outdoor furniture is not recommended. While it may seem convenient, indoor rugs are not designed to withstand the outdoor environment. They lack the crucial weather-resistant properties of purpose-made outdoor rugs.
Outdoor rugs are constructed from synthetic, moisture-resistant materials like polypropylene, which prevent mold and mildew growth. They are also fade-resistant to handle direct sunlight and are easier to clean. Most importantly, outdoor rugs have non-slip backings for safety on decks and patios, whereas indoor rugs can become slippery and hazardous when wet.
For the longevity of your rug and the safety of your space, always choose a rug specifically rated for outdoor use. It will handle rain, sun, and foot traffic far better, making it a durable and stylish foundation for your outdoor living area.