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Pest Problem Guide

Fly Parasites

fly life cycle Fly parasites are gnat-sized, nocturnal, burrowing insects which do not bite, sting, or harm humans or animals.

These tiny wasps kill the fly pupae both by host feeding and by parasitization, depositing their eggs into the live pupae. Adaptable to all climates, these parasitoids reproduce in two to three weeks, thus constantly reinforcing the beneficial insect population.

The insects are shipped as parasitized pupae in a sawdust medium and are dispersed by releasing a small handful at "hot spots": for example, manure collection sites; under water troughs; along fence lines; below straw bedding; around mill areas, silage pits, and other feeding sites.

At the edges of these hot spots, scratch a 1/2 inch hole in the ground with your boot heel, drop in a small handful of sawdust and pupae, and cover with them with straw, earth, or manure to protect them against wind, birds, or pesticides.

The parasites may travel 30-50 meters in search of viable fly larvae and pupae. Repeat this release procedure in slightly different spots on subsequent applications. In this way, new cultures of parasites will be evenly distributed throughout the fly season.

(see Fly Control Fact Sheet, Treatment Schedules and Suggested Starting Dates)

108101 Fly Parasites, 1/2 unit (1#)   $13.50
108112 Fly Parasites, 1 unit (1#)     $24.00
108152 Fly Parasites, 5 units (1.5#)  $98.00

   Overseas shipments may weigh more due to extra ice added 
   to shipment to keep the product cool during transport. 
Order A-La-Carte below or use our Prescription Program Calculator to order fly parasites for the whole season.

Preferred Shipping methods: U.S. Priority Mail, FedEx or UPS 2nd Day or Overnight.

Cart orders that have anything other than Priority or Express shipping will be upgraded.

Permit required for shipment to Hawaii and many countries outside the USA.

"Live & perishable product sales, once shipped are final, non-cancelable
and non-refundable, unless approved by a Biocontrol Network officer."

Also read:

  • Biological Fly Control - Domestic Rabbit article - by Eric Acosta.

    parasitized fly pupae in wood chips parasitic wasp


    Your insects arrive in a bag as parasitized pupae in a sawdust medium. The pupae are at various stages of development. Store at room temperature away from dogs or ants. Check for hatching over the next day or two by holding the bag up to a light source. When the first gnat-like parasites appear inside the bag, its time for application. Once dispersed, hatching will continue over the next 1-2 weeks.

    The parasites are nocturnal, thus the optimal release time is dusk. Apply the parasites around the edges of hot spots -- areas where manure and urine are accumulated -- where flies are crawling and breedng. Scratch a 1/2 hole in the ground with your heel, drop in a tablespoon of the sawdust and pupae mixture, and cover the hole with dirt, manure, or straw. Repeat this process every 10-20 feet until the package contents are gone. Use a little extra in problem hot spots.

  • Webkeeper: E. W. Acosta - mailto:info@biconet.com Last Update: 19 Mar 09
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