Mildew on outdoor furniture cushions is a common problem, especially in humid or damp climates. Fortunately, you can remove it with some simple household ingredients. First, take the cushions off the furniture. If the care labels are removable, check them for specific cleaning instructions. Brush off any loose dirt or spores outdoors to prevent spreading them inside.
For a natural cleaning solution, mix equal parts white vinegar and water in a spray bottle. For a stronger solution, you can use one part bleach to four parts water, but test this on a small, hidden area first to ensure it doesn't bleach the fabric color. Whichever solution you choose, spray it generously onto the mildewed areas until they are thoroughly saturated. Let the solution sit for about 15-20 minutes to penetrate and break down the mildew.
After waiting, use a scrub brush with stiff bristles to vigorously scrub the cushions. Focus on the areas with the most mildew stains. The goal is to lift the mildew from the fabric fibers. Once you've scrubbed the entire surface, rinse the cushions thoroughly with a garden hose. It is crucial to remove all the cleaning solution and the dislodged mildew.
The final and most critical step is drying. Squeeze out as much water as you can. Then, place the cushions upright in a sunny, well-ventilated spot. Sunlight is a natural disinfectant and helps kill any remaining mildew spores. Ensure the cushions are completely dry on all sides before putting them back on your furniture. To prevent future mildew growth, store cushions in a dry place or use protective covers when they are not in use, especially during rainy seasons. Regular cleaning can also prevent mildew from taking hold in the first place.