Bonide PRODUCTS 7460 Concentrate Kleen Up Weed Killer, 16-Ounce 16 oz., Concentrate, Kleen-Up Weed Killer One quart makes 21 gals. of spray and treats 6,300 sq. ft. Glyphosate 41.0% with 15% surfactant. Kills to the roots of the plant for total control Rainproof hours after application Kills all types of weeds including broadleaf, and grassy types