QuestionsHow to growGreenhouse GrowingOther greenhouse vegetablesWire Worms 0 Vote Up Vote Down sylvia wright asked 10 years ago Having Planted out some Cabbage and lettuce plants in my polytunnell I am having the same problem as last year with Wire Worms…could you please tell me the best way to deal with these and what to treat them with. 1 Answers 0 Vote Up Vote Down Gerry Daly Staff answered 6 years ago Wireworms are the larval stage of click beetles and your tunnel must be new because the eggs are normally laid in grass areas. You can try a nematode control called Supernemos or Nemasys.Â