Truthfully have not used it yet. Bought it because of cyanobacteria/black layer/turf algae on my croquet lawn.
3 Stars because it is expensive, approximately $1.00 per oz. I)f used at the recommended rate of 10 oz per 1000 sq ft. Will cost over $120 for my lawn per application (12000 sq ft)
Decided to use it sparingly only on affected areas.