Fly Parasites 10,000 pupae

Fly Parasites 10,000 pupae
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Price: $29.95
Product ID : FPP11


A Biological Fly Control Program

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Larvae/Pupae Control:

Control Flys with Fly Parasites, the natural enemy

  • Kill developing flies.
  • Break the life cycle of the fly.
  • Attack fly larvae and pupae

Beneficial Nematodes

  • Attack fly larvae
  • Required only 1-3 applications per year.
  • Gives extra control where large numbers of larvae are observed.

Manure Management/Sanitation:

  • Remove manure regularly.
  • Compost waste properly.
  • Repair leaky water devices.
  • Keep feed storage areas dry.

Parasite Particulars

  • Gnat-sized, nocturnal, and burrow into the soil.
  • Can be used to treat dogs, poultry, swine, feed lots, dairies, and other facilities where flies are a problem.
  • Will NOT bite or harm humans and animals.
  • Reproduce in 1-2 weeks, constantly reinforcing the parasite population.
  • Sold in the form of parasitized pupae, and are easy to disperse.
  • Travel up to 80 yards to find food sources (fly pupae)
  • Adaptable to all climates.
  • Bio-Balanced Fly Control is the long overdue solution for livestock owners, breeders, and trainers.
  • Bio-Balanced Fly Control programs are the safest, most cost effective way to control filth-breeding flies!

Our fly parasite predators are a combination of 3 different species: Spalangia cameroni, Muscidifurax zaraptor and Muscidifurax raptorellus. Using all three different species will reduce the fly population more effectively. They are small, harmless (to humans and animals) beneficial insects that nature has programmed to attack and kill flies when the pest is in its immature pupa stage. The female Fly Parasite will deposit her eggs inside the pupae and once hatched, the tiny parasite larvae consume the inside of the pest fly pupae. Once inside, the eggs hatch inside the fly pupa and feed on the developing fly. After two to three weeks of feeding, an adult fly parasite emerges to repeat the cycle. Each female fly parasite can kill approximately 100 immature flies in her lifetime. This need provides a strong and natural incentive to do all the work: search and destroy. Since their only interest is the pest fly pupae, they will not bother humans or animals.


It is best to release Fly Parasites throughout the season for several reasons: pests produce more eggs in a shorter period of time since their life cycle is much shorter and flies come in from elsewhere. Also, releasing small amounts of Fly Parasites over a period of time (weekly, every other week or monthly) has proven to be more effective than a large release.

For best results, start releasing before flies become a problem. The parasites do not attack the adult flies, thus measures need to be undertaken to keep the existing population as low as possible. Use of traps and baits is recommended. If a short-lived natural pesticide is necessary, try to avoid the breeding sites where parasites are active. It will do more harm than good there.

Along with the fly parasites you should employ a combination of measures to achieve the greatest reduction of flies: cultural control (sanitation), manure management (disposal), and water management (fly larvae need a moist environment to grow).

Fly Parasite release rates, as with any beneficial insect, depend on several factors. The following guidelines have been successfully tested under normal pest conditions:

  • Large animals (horse, cow, etc.) – 500 parasites per animal
  • Medium animals (sheep, goat, etc.) – 250 parasites per animal
  • Small animals (birds, rabbits, etc.) – 50 parasites per animal
  • Manure/compost piles – 5 parasites per cubic foot

Shipped Free (USPS – First-Class Mail) We do everything we can to ensure safe arrival of your beneficial insects.

Target Pest:

Controls flies in animal manure accumulations and other filth fly breeding sites. Very effective against the housefly, biting stable flies, garbage flies, and the lesser housefly which make up to 95% of the flies in manure and other site accumulations. Five percent of the other flies are also parasitized, such as false stable flies, face flies, flesh flies and horn flies, but control is less complete on those flies which complete their life cycle widely dispersed in the pasture.


These small parasitic wasps are the most natural enemy of flies during the pupa stage. We provide several species of the tiny wasps in the genera Muscidifurax and Spalangia that attack and have adapted to different climates with a higher proportion of Spalangia in proportion to Muscidifurax. The eggs of the parasitic wasps are laid inside the flies pupae and the developing flies provide food from within for the young wasps.

Parasitic wasps do not bite, sting, swarm or bother anything else, humans or animals included. Parasitic wasps are nocturnal and are rarely seen during the day. They operate to a depth of 8 inches in the manure, homing in with their biological radar on fly larvae that are about to pupate

Parasite Application

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 and 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 it's time for application. Once dispersed, hatching will continue over the next week.

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 breeding. 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".

Buglogical has designed a Fly Control Program using regular releases of fly parasites and beneficial nematodes.

First, use regular releases of fly parasites based upon the prescriptions to the right.

Second, use beneficial nematodes once or twice a year to treat manure piles or any areas where fly larvae populations may be abundant.

Suggested Prescription

No. HorsesNo. ParasitesFrequency
1-55,000Every 3 Weeks
5-105,000Every 2 Weeks
10-1510,000Every 3 Weeks
15-2010,000Every 2 Weeks


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