Fly Exterminators for Fly Control



Fly Exterminator Information

Step 1 - Decide what Qty you will need based on the number of animals (See chart below).
RELEASE RATES: The rule of thumb is 1,000 fly exterminators for 1 large animal.

Step 2 - Look at the map below and decide your zone (Shipments are monthly and based on your zone and the time you start you can determinate how many shipments you will need to be protected through the fly season.)

Step 3 - Select your prescription from the drop down menu at the top of this page and proceed to check out.

Natural Fly Control - Prescriptions are available during fly season, order once and we will automatically ship an order per month based on your prescription. Fly Exterminat can be shipped via USPS (United Postal Service)

For large quantitys/prescriptions please feel free to contact us at 1-800-493-1885

A serious drawback to raising livestock or owning animals are the appearance of flies. The habits of flies favor the spread of bacteria and other disease-causing organisms. Flies often feed and lay eggs on garbage, manure and carrion before contaminating human foods and food preparation surfaces by landing on them. When feeding, house flies regurgitate their stomach contents onto food to liquefy it before ingesting it. They also may contaminate food and surfaces by defecating on them. Other species will bite humans/animals.

Fly Exterminators are small parasitic wasps and the best natural enemy of flies during the pupa stage. We provide several species of the tiny wasps in the general 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.


Release Instructions for Fly Exterminators

Top priority release sites are barns, stables, kennels, in and around coops, stalls, with special attention to hospital and calf pens on dairies and horse stalls, on feedlots and wherever straw bedding is provided for animals. Place also around corral posts, fence lines, paddock areas and other dropping sites, at the edges of manure piles, pits or carts, and wherever manure accumulates.

A few flies always will survive the cold and drying conditions of winter in the pupa stage. In early spring parasites should be released at the first sign of emerging or immigrating adults to minimize the number of adult flies that are laying eggs. Very early releases can be smaller in number, increasing the quantity at the first sign of active breeding. Once the parasites are established fewer parasites may over-winter outdoors, but yearly augmentation is necessary in order to prevent a build-up of flies. Parasitic wasps arrive in woodshavings developing inside the fly pupa and when fully grown they will cut a hole in the pupal case and exit as adults searching for more fly larvae, seeking to lay their eggs where the flies pupate.

The parasites must not be left in direct sunlight or hot areas. They need to be held at 70° to 80°F, increasing to 85°F for more rapid emergence. They should be emerging and ready to release within a day or two.


Frequently Asked Fly Exterminator Questions

Question:What are the advantages of using bait trapping methods along with fly exterminators?
Answer: Bait trapping is highly recommended to accompany fly parasite releases for adult flies. Using some non-poisonous materials or chemicals can be useful when they are made into sugar baits and fed to the adult flies. It is both economical and safe to use bait traps to kill large numbers of adult flies without interfering with biological controls. In order to lessen the fly problems during the first few weeks of summer it is important to lower the adult fly density before seasonal hot weather arrives and also during the period of time it takes for the beneficial to reproduce to larger numbers in the manure. In areas with humid weather and wet manure accumulations both releases of parasites and bait stations are needed to give excellent fly management. Inside each barn or shady area one bait trap should be set up when you start releasing parasites. The number of traps should be increased along with parasite releases until the adult flies are gone.


QuestionWill removing manure from my pasture or barn help to control fly populations?
Answer:In order to help limit fly problems it is imperative to practice good sanitation which will then eliminate the conditions which are favorable to fly breeding. Removing manure frequently reduces fly parasite breeding areas. While leaving a little of the top layer of manure in place in order to leave some of the complete complex of beneficial to keep destroying the flies. Keep manure dry and eliminate wet areas where possible while maintaining ventilation. Clean up feed spills where possible. Use hydrated lime where animals urinate frequently. In cases where there are large amounts of manure, the manure can be managed in a pond or a storage area where non-aerobic digestion is accomplished or by aerobic composting systems. Manure which is unprocessed can be piled and covered which will reduce the surface and heat built up to reduce fly breeding. Dry manure does not breed flies, but a moisture content of 50% to 80% is where fly breeding occurs and is also where the fly parasites work best.