To clean mildew off resin wicker outdoor furniture, start by moving the furniture to a well-ventilated area. Create a cleaning solution by mixing equal parts white vinegar and water in a spray bottle. For stubborn mildew, add a tablespoon of baking soda to enhance cleaning power. Spray the solution generously onto the mildewed areas and let it sit for 10-15 minutes to penetrate the mold.
Use a soft-bristled brush (a toothbrush works well for tight spaces) to gently scrub the wicker strands, being careful not to damage the resin material. Pay special attention to crevices where mildew tends to accumulate. Rinse thoroughly with a garden hose or damp cloth, ensuring all cleaning solution and mildew residue is removed.
For persistent mildew stains, create a stronger solution using one part bleach to four parts water, but test this on a small, hidden area first as bleach may discolor some resins. Always wear gloves and protective eyewear when using bleach solutions.
After cleaning, allow the furniture to air dry completely in sunlight, which helps kill remaining mold spores. To prevent future mildew growth, apply a UV-protectant spray designed for outdoor furniture and consider using waterproof covers when furniture isn't in use. Regular cleaning every few months will help maintain your resin wicker furniture's appearance and longevity.