BioAdvanced 32oz 2-In-1 Moss & Algae Killer RTS (Keywords: Bayer )

Kills moss, algae, and lichen wherever it grows. Acts like two products in one - treats lawns and patios plus roofs and buildings. The odorless, non-staining formula kills within hours and protects for months. Will not harm turf when used as directed. Active ingredient: 22.1% fatty acid. Treats up to 5,000sq ft.