"SPRAY & FORGET" ROOF CLEANER CONCENTRATE *1 gallon-makes up to 10 gallons *Removes roof algae (black streaks) and moss *No rinsing required *Biodegradable, non-corrosive time released formula *Safe on landscaping when used as directed *Also works on stucco, siding, brick, stone, wood and more to remove green algae stains, lichen, moss and black mildew *Prevents stains from returning *Contains no bleach, hydroxides (Lye) or acid *To apply use hose end sprayer Ace no.73986 *Bottle
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