Bonide Weed Beater Fe Concentrate is a specially formulated herbicide that helps treat multiple problems in your lawn. It is derived from naturally occurring Iron which provides effective control of unwanted broadleaf weeds, plant diseases, algae, moss and lichens in turfgrasses. It also helps eliminate hard-to-kill dandelions and clover. It can reseed lawns one day after spraying, plus it can be applied to newly emerged grass after only a week. It also performs well in cool weather, as well as be used as a spot treatment. This fast-acting formula offers visible results in just a few hours after application. This liquid concentrate comes in 1-pint bottle and can make up to 3 gallons of solution.