Is your lawn being covertly invaded by leatherjackets (larvae of flies known as crane flies)? Then it’s time to take overt action with BUG-X OUT Leatherjacket Nematodes! These worms actively prey on leatherjackets, infecting them with a fatal bacteria. When the leatherjacket is dead, the nematodes reproduce and lay their young on the leatherjackets, and a new generation arises to kill more of these pests.