Thumb Score: +20 Amazon has 1-Gal Ortho GroundClear Super Weed & Grass Killer Refill on sale for $6.97. Shipping is free w/ Prime or on $35+ orders. Thanks to Deal Hunter gaamn114 for finding this deal. Features:[LIST][*]Weeds start to wilt within hours and completely die in 1-2 weeks with quick kill formula that is rainfast 15 minutes after it's applied