Noticing green or black patches on your favorite park bench? That's likely mildew or algae, common issues in damp, shaded urban areas. Cleaning them requires care to avoid damaging the wood, metal, or concrete. Here's a safe, step-by-step guide.
First, identify the bench material. For treated wood or metal, a gentle approach is best. Mix a solution of warm water and mild dish soap. For stubborn growth, add one part white vinegar to four parts water. Avoid bleach on porous surfaces as it can degrade materials and harm plants.
Apply the solution with a soft-bristled brush, scrubbing in circular motions. Rinse thoroughly with a low-pressure hose. For concrete or stone benches, a slightly stronger mix of oxygenated bleach and water can be used. Always test any cleaner on a small, hidden area first.
Prevent regrowth by ensuring benches are in sunny, well-ventilated spots when possible. Regular wiping after rain can help. For public benches, report persistent issues to local maintenance crews. With these methods, you can restore benches safely, preserving their longevity and beauty for everyone.