Lawn Dethatcher Are weeds and crab grass a problem for you? Then you need this attachment! Quickly removes weeds and the tan-looking built-up "thatch" that can choke your lawn. The 60 spring-steel picks let you dethatch a 15" swath with a single pass. Thatch harbors insects, creates a water barrier, and prevents new grass from growing. Dethatch your lawn regularly in spring and fall, especially before feeding and fertilizing. (For Mantis XP and Mantis Deluxe XP 16" Tillers only) Models available for all Tillers