Zinsser® Spray Once® Exterior Stain Remover is the simple way to remove tough stains from mould, mildew, moss and algae on exterior surfaces. Simply dilute as instructed, apply and walk away; no scrubbing or rinsing required. The bleach-free and non-acidic formula works with the rain and moisture over time to remove unwanted stains. Spray Once is safe for porous and non-porous surfaces including siding, roofs, fences, decks, patios, driveways, walkways, brick, patio furniture and more.
- Removes stains from mould, mildew, moss & algae
- Safe for porous and non-porous surfaces
- No scrub, no rinse formula
- Can be used near plants and shrubs
- Easy application with a garden sprayer