Fiesta Herbicide contains iron (4.43%) as FeHEDTA. Fiesta controls weeds. For use on lawns and turf (on duty, unharvested areas, golf courses, parks, cemeteries and athletic fields) consisting of one or more of Kentucky blue grass, l 'perennial ryegrass, and fescue (large fescue, chewing fescue and or fescue). Unique formula that kills a variety of weeds including dandelion and clover. Kills weeds in lawns. Control down to the root. - Derived from iron, which occurs in nature - Water based - No unpleasant odor - People and pets can enter the area once the spray is dry - Quick rain in 3 hours - Works quickly, see results in hours - Operates in cold weather 29539 PCP ACT The best weedkiller used in Canada. This product is used by lawn care professionals.