Biopar
wasps emerge from the pupal shells, they will start searching for fly pupae to parasitize. After parasitism, wasps of the new generation can be expected [...] Cardboard cylinder: wood-chips. Application Distribute the material in heaps near to the places where the flies pupate and cover with 5-10 cm of straw Make sure [...] the material is distributed on dry places or on dry(er) manure Place close to stable walls or edges, or in furrows Start introduction as soon as flies can