Mantis 5222 Dethatcher Attachment for Tillers (Except XPMantis 5222 Dethatcher Attachment for Mantis Tillers (Except XP Models) 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. Features: 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,