30 SECONDS Spray & Walk Away Hose End Sprayer | 2 Pack | Roofs Composite Shingles Asphalt | 64 fl. oz.
- ... Cleans over time with the wind and rain, green stains clean up within 1-2 weeks, black stains or heavy, stubborn stains can take several months, long-established stains may take 6-12 months.
- surfaces can stay clean up to 1 year or longer.
- spray 100 feet away from lakes, ponds, rivers, and streams and flush plants with water before and after application.
- One bottle treats 750 - 2,250 square feet, heavy stained and porous surfaces will absorb more product.