Armitage72
Philosopher
The label of the product is visible on that page. Harris 12% Hydrogen Peroxide.

It's labeled as a stain remover. Do you know what it isn't labeled as? An algaecide registered with the EPA and the Washington DC Department of Energy & Environment.
They're violating federal and DC law doing that. I'd wager those guys aren't certified pesticide applicators either, something that's required when applying pesticides to someone else's property for pay. (Pesticide regulation used to be my job.)
Harris 12% Concentrated Hydrogen Peroxide (128 oz)
Fizzing action powerfully penetrates & lifts tough stains for an oxygen-powered, whole-home clean. Not for pesticidal use.
