FLYforce™ – Fly Parasites for Natural Fly Control (7,500 / 10,000 / 15,000 / 25,000)

★★★★★ 4.8 110 reviews

US$11.98
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US$11.98
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Free shipping Free 30-day returns

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Management number 250625503 Release Date 2026/09/17 List Price US$11.98 Model Number 250625503
Category

Break the fly cycle at the source by killing the pupae before adults hatch

Swatting adult flies is a losing battle when new ones keep hatching out of manure and bedding. FLYforce fly parasites are tiny parasitic wasps that lay their eggs inside fly pupae, so the next generation of flies never emerges. Scatter them on manure piles, bedding, and other breeding sites, and repeat weekly through fly season to keep populations from ever building. They target flies only and leave your animals alone.

Targets fly pupae at the source Harmless to livestock and people Ships live, overnight Tuesdays

Live insects ship on Tuesdays only and arrive Wednesday. Orders must be placed 7 days in advance. Anything ordered by 3pm EST Tuesday ships the following Tuesday by UPS overnight shipping.

UPS overnight shipping on live insects
Bundle and save on shipping
5% off with subscription
Chasing adult flies vs. stopping the next generation
Traps and sprays
  • You only ever fight the adults you can see
  • New flies keep hatching out of manure and bedding
  • Sprays around animals mean chemical exposure
  • Flies build resistance to insecticides
  • One treatment barely dents the population
  • Reactive, all season long
FLYforce fly parasites
  • Attacks the pupae, the source of every future fly
  • Parasitized pupae never become adult flies
  • Wasps are harmless to livestock, pets, and people
  • No resistance to being parasitized
  • Weekly releases through the season steadily shrink numbers
  • Preventative pressure that gets ahead of the hatch
Why parasites beat the fly swatter

Hits flies before they can fly Pupae-stage control

These parasitic wasps lay eggs inside developing fly pupae. The wasp consumes the pupa, so an adult fly never emerges from it.

Safe around animals

The wasps are tiny, do not sting or bite, and have no interest in livestock, pets, or people. They can be applied right in the barn and paddock.

Season-long program

Because flies breed continuously in warm weather, weekly releases through fly season keep steady pressure on each new batch of pupae.

Goes to the breeding sites

You scatter them exactly where flies reproduce: manure piles, soiled bedding, compost edges, and other moist organic matter.

Reduces spray reliance

Sustained parasite pressure lowers the overall fly load, which cuts how often you need to reach for chemical fly control.

Nothing to mix

The parasitized pupae come ready to scatter by hand. There is no equipment, no mixing, and no protective gear.

Pest species it targets
House fly (pupae) Stable fly (pupae) Horn fly (pupae) Other manure-breeding filth flies
Where it works best
Temperature
Warm fly-season conditions
Where
Manure, bedding, moist organic matter
Mode
Parasitizes fly pupae
Program
Release weekly through the season
Application instructions
1

Scatter the parasitized pupae at fly breeding sites: manure, soiled bedding, and compost edges.

2

Release close to the breeding areas, since the wasps stay near where they're placed.

3

Start early in the season before flies peak, and repeat weekly.

4

Combine with sanitation and moisture management for the best results.

How FLYforce shrinks your fly population

1

Find the breeding sites

Identify where flies reproduce: manure piles, damp bedding, compost, and other moist organic matter around the property.

2

Scatter the parasites

Sprinkle the parasitized pupae at those sites, focusing on the edges and shaded, moist zones flies prefer.

3

Wasps parasitize new pupae

The emerging wasps seek out fresh fly pupae and lay their eggs inside, ending each one before it becomes an adult.

4

Repeat weekly

Release again each week through the season so every new wave of fly pupae meets a fresh batch of parasites.

What you get and how to size it
What ships to you
  • Live fly parasites as parasitized pupae, ready to scatter
  • Count matched to your chosen size
  • Placement and weekly-release instructions
  • Insulated overnight packaging
Sizes and options
  • Count options: 7,500 / 10,000 / 15,000 / 25,000
  • Sizing: scale to animal count and property size
  • Program: start early in the season and release weekly
Which count is right for my property? Release size scales with how many animals you have and how large the breeding area is. Tell us your setup and we will recommend a count and cadence. Call or email us: 716-217-0353 / help@
Frequently asked questions
Release size scales with animal count and the size of your breeding areas, which is why we offer counts from 7,500 up to 25,000. Rather than guess, tell us how many animals you have and how much manure and bedding you are managing, and we will size it for you.
No. They are tiny, non-stinging wasps that live in and around manure and bedding, seeking out fly pupae. They have no interest in animals or people and are completely safe to apply around your livestock.
Start early, before fly numbers peak, and keep releasing weekly through the season. Getting ahead of the first hatches is far more effective than trying to catch up once flies are already swarming. We can help you plan the timing for your climate.
Live insects ship overnight on Tuesdays only, so they arrive Wednesday while still fresh. Place your order at least 7 days ahead so we can include you in the next weekly dispatch. We cannot ship live insects to HI, PR, VI, GU, AS, or PW. Open the package and release the same day it arrives.
If you receive a defective or damaged unit, email us a photo at help@ and we'll make it right immediately. For change-of-mind returns, we accept returns within 30 days for items in new, resalable condition. If you're not sure whether this product is right for your setup, call us first at 716-217-0353. We'd rather answer your questions before you order.
Happy Hydro has been selling growing equipment since 2006. We've carried Beneficial Insects for years because the biology works and customers who buy it leave happy. Have questions before you order? Call 716-217-0353 or email help@. We're easy to reach and happy to help!

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