Way too complicated to mark off an area to figure how mush product to add per quart of water to a sprayer. I called the company Trimec and their customer support said 1.5 to 2 oz per oz per quart of water. Did this and after 1 week did not see any weeds starting to die. Resprayed and added 10 to 14 oz per quart and will wait to see what happens . Probably killed the lawn but at this point I don't care. In the future I will buy a product that gives exact amounts to add per quart to a sprayer. Walking rate sprayer head and gallons per minute way too complicated for average person top figure out.