To effectively clean mildew off outdoor furniture, start by preparing a cleaning solution. Mix one part white vinegar with one part water in a spray bottle for a natural option, or use a mixture of 1 cup bleach, 1/4 cup mild soap, and 1 gallon of water for tougher cases. Always test any solution on a small, hidden area first to ensure it doesn't damage the material.
For plastic, metal, or resin furniture: Spray the solution generously over the mildewed areas and let it sit for 10-15 minutes. Scrub with a soft-bristled brush in circular motions, paying extra attention to crevices where mildew thrives. Rinse thoroughly with a garden hose.
For wood furniture: Use a gentler approach with 1 tablespoon baking soda mixed into 1 quart of warm water. Apply with a soft cloth and scrub gently along the wood grain to avoid damaging the surface. Never use bleach on wood as it can cause discoloration.
For fabric cushions: Create a solution of 2 tablespoons borax, 1/2 cup white vinegar, and 2 cups hot water. Spray on the fabric, let sit for 30 minutes, then scrub with a soft brush. Rinse completely and air dry in sunlight.
After cleaning, prevent future mildew growth by storing furniture in dry areas during wet seasons, using protective covers, and applying specialized outdoor furniture protectants. Regular cleaning every 4-6 weeks during peak humidity months will help maintain your furniture's appearance and longevity. Always work in a well-ventilated area and wear protective gloves when handling cleaning solutions.