Fly parasites are used to attack immature fly pupae, killing them while they are immobile and helpless. Flies have a very simple life cycle with a fast maturity rate. The adult female lays eggs which almost immediately hatch into larvae (maggots). Soon, 3 to 4 days, these evolve into a pupal shell. This is the “resting” stage where they undergo their final transformation into adult flies. This is when the fly parasite does its feeding. Fly parasites destroy developing flies by seeking out the pupae, invading the shell and either consuming them or laying eggs inside as part of their own reproductive cycle. The parasites’ eggs hatch and eat the developing fly. Emerging from the pupal shells as adults, they repeat their cycle seeking out other fly pupae. Fly parasites live entirely within the manure, never becoming pests themselves.
Release Rate: Approximately 1,000 fly parasites per 100 square feet. Large animals (horses and cattle) – 1,000 per head; medium animals (pigs and sheep) – 500 per head; poultry – 10 per head.
“We have been using fly parasites for years. We don’t have to use fly spray on our horses. Can’t say enough good things about your bugs.”
— Kip C., Washington