Liquid Rake, 1 Gallon Professional: Effective under a wide range of conditions and turf types. Easy To Use: 1 gallon treats up to 2 acres of lawn area! Beneficial: Improves water and oxygen penetration into soil; grass grows stronger and healthier. Protection: Minimize damage from mechanical dethatching and related turf problems. 100% Natural and Safe: Treat and control thatch buildup in turf. Nontoxic.