Further enhancements can be made to the apparatus by attaching nets and cones such that the insects can get in to lay their eggs but then find it difficult to escape.
Many invertebrates feed on the fungal mycelia produced in animal nests.
The conditions found in the nests can be simulated by forming a large ball out of feathers, or animal fur, and enclosing it in a netting bag. These bags should be soaked in water and hung up amongst vegetation. It is preferable if they are placed in positions where they will not receive direct sunlight as they need to be kept moist for the fungal mycelia to develop. The moths will lay their eggs directly onto the feathers or fur and the hatching caterpillars will commence feeding on the fungal mycelia. The bundles should be brought in at 6 week intervals and placed in clear plastic boxes where the development of any larvae can be observed.