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Your cart is empty.Brand new..each bag has 12 ounces in it, mix 1 ounce per gallon of water and apply to roof for moss killing, or 2 ounces per gallon for sidewalks.... takes 4 to 5 weeks to fully kill off moss, but should see browning start in 2-3 weeks depending on temperature and moisture levels. Recommend twice a year spraying of roofs
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