ACE Lawn Weed Killer Concentrate singles out weeds, enters through leaves and moves inside the weed to the roots. It kills weeds in your lawn without harming lawn grasses (when used as directed). In just 24 hours you'll see visible results in the treated areas. Mix ACE Lawn Weed Killer Concentrate with water and apply to needed areas with a tank sprayer. Each 32 oz. container can treat up to 12,800 sq. ft. (or the equivalent of 6 tennis courts). With ACE Lawn Weed Killer Concentrate you'll be able to spend less time pulling weeds and more time enjoying your lawn.