anyone know of a good chemical that you don't have to have someone stand at the bottom and water it into the landscape, i've heard of them but cant' locate a good dealer. i sawy some by defy that you spray on, let it sit and then spray off with a water broom. It says it will not hurt the landscape, is this the only company? surely not? all the others i find says you must water in the landscape very well to prevent burning. Anyone know of any? thanks
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roof cleaning chemicals