Spray & Walk Away Conc 1gal

30 SECONDS Spray & Walk Away kills lichen, moss, mold and algae in one easy step. Simply Spray & Walk Away. 30 SECONDS Spray & Walk Away is a slow release formula that works over time. Mother Nature does the work for you, eroding the treated matter, while it decays over several weeks. Perfect for those LARGE surface areas that you can Spray & Walk Away, such as roofs, walkways and walls. And best of all, it saves water, time and money, not having to pressure wash or rinse off. 128 oz.. .