Nippon wasp control system from vitax provides an effective and easy to use method of creating wasp free zones in the garden designed to be hung from trees walls trellises etc away from picnic areas and barbeques the system consists of a trap and specially formulated wasp attractant safe to use around children and pets the wasp traps should be used from june through to september when wasps are most active each pack contains one trap which will remain effective for up to three months