RM18 75439 Fast-Acting Grass and Weed Killer with Diquat 64 oz. Features: Concentrated formula makes up to 21 gal. to provide unwanted brush, grass and broadleaf weed control This weed and grass killer treats up to 6,300 sq. ft. Produces visible results in 12 hours Kills the weeds and grasses down to the root while leaving fertile soil available for the plants you want This weed preventer for lawns is made from a combination of two herbicides to start killing weeds on contact Effective against Kudzu, wild blackberry, poison ivy, poison oak, crabgrass, and dandelions (and over 100 other plants) Rainfast in thirty minutes and effective for up to 6 months No entry restrictions to sprayed areas for pets or people after the spray has dried Includes 64 oz. bottle of weed killer For best results, apply this herbicide on a warm, sunny day when wind is calm and weeds are actively growing For easy to kill weeds such as small seedlings, use the lowest recommended rate (3 fl. oz. in 1 gal. of water); use the maximum recommended rate for larger, harder-to-kill weeds (6 fl. oz. in 1 gal. of water)