How to Get Rid of Yellow Stains on Clapboard on the Exterior of the House
- 1). Spray all stains with the oxygen bleach or oxygen-based cleaner. Mix the bleach or cleaner according to label instructions. Different products have different mixing ratios.
- 2). Leave the liquid on the stains for up to 15 minutes.
- 3). Scrub the stains with the soft-bristled brush.
- 4). Rinse off with the hose.
- 5). Repeat if stains remain.
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