How do manufacturers test the resistance of outdoor furniture to oil and grease stains?

Manufacturers rigorously test outdoor furniture for resistance to oil and grease stains to ensure durability and ease of maintenance. Common methods include applying standardized stains like cooking oil or motor grease to fabric or surface materials, followed by controlled exposure to sunlight and moisture. The furniture is then evaluated for discoloration, absorption, and ease of cleaning. Advanced testing may involve accelerated weathering machines to simulate long-term exposure. High-quality outdoor furniture often undergoes multiple rounds of testing to meet industry standards, ensuring it remains stain-resistant and visually appealing over time. These tests help consumers choose products that withstand everyday spills and outdoor conditions.