Got Flies?

You’re in the right place.

If flies are driving your horses (and you) crazy, we get it. Every horse owner knows the struggle: stomping, tail-swishing, irritated skin, and the constant battle to keep pests away. Flies aren’t just annoying—they’re a real threat to your horse’s comfort, health, and performance.

At Spalding Labs, we’ve helped thousands of horse owners across the country take control of their fly problems using a natural, effective solution: Fly Predators.

Flies Aren’t Just Annoying—They’re Hurting Your Horses.

Flies can cause stress, skin infections, poor coat condition, and even reduce performance. If you’re dealing with stomping, pacing, or constant fly spraying, you know how frustrating it can be.

But what if you could stop flies before they appear?

Meet Your Secret Weapon: Fly Predators

Fly Predators are tiny, beneficial insects (called parasitoid wasps) that kill flies before they hatch. They’re nature’s own solution to fly control—and unlike sprays or traps, they work at the source by targeting fly pupae in manure and bedding.

They don’t bite, sting, or bother people or animals. In fact, most people never see them at all—they just notice significantly fewer flies.

Easy to Use

Simply sprinkle a pinch of Fly Predators near manure piles, old hay, wash racks, or other areas where flies reproduce.

An Unseen Battle

By parasitizing the fly pupae, Fly Predators stop the fly life cycle and significantly reduce the population before flies emerge.

Optimized Performance

Spalding Labs' Fly Predators include only the most effective parasitoid insect species. Our bugs are backed by science.

The Best Bugs Available

Spalangia and Muscidifurax species are scientifically proven to be the most effective parasitoids for fly control in environments where animals live. Other companies use Nasonia, a less effective parasitoid for fly control. Using only top performing species ensures you get the best fly control for your farm.

Safe & All Natural

Unlike chemical-based solutions, Fly Predators are completely natural and safe for animals, people, and the environment.

Nature's Fly Control

Fly Predators target only pest flies, leaving beneficial insects and wildlife undisturbed. They won't bother you or your animals, only filth flies. Fly Predators are found in the wild, but they reproduce slower than flies. Adding Fly Predators at regular intervals helps them keep up with accelerated fly breeding rates, especially during weather with high heat and moisture.

**Fly Predators work with your current fly control methods and reduce your need for sprays and traps.**

Trusted by Thousands of Horse Owners

Amazing product. We have used their fly predators for years. They truly help reduce the leg and face flies. Less pesky flies and happier horses. Less hoof cracking from stamping.

Went a year without them, would not do it again. Excited to get going at the end of April, have been a customer for over 20 years.

I have used Fly Predators since 2010 and every year we see a large difference in our fly population. I strongly recommend Fly Predators for anyone that owns livestock!

My family has used the fly predators for over 10 years. We save so much on fly spray!!!!!!

I love how easy it is to use them and how little the cost is compared to 'poisons.' When I first moved to Athens, I was worried my Fly Predators were not going to work - but I was surprised when they did. My Fly Predators are really going to kick some butt this year!!!

What’s Included in a Fly Predators Plan?

Your Fly Predators will automatically arrive when you need them, ready to fight flies upon arrival. You’ll get:

Stop Flies Before they Start:

Take 10% Off Your Order with Code GOTFLIES25

If you haven’t experienced the power of Fly Predators before, now is the time to get started. When you use Fly Predators, you stop flies before they start. We want you to enjoy a fly-free summer, so we’re offering you 10% off your order with code GOTFLIES25!

Claim Your Exclusive 10% Off Discount and Stop the Swarm!

Order Now and Save 10%!

Prefer to order by phone? Call us at 1-888-562-4552
Email us at [email protected]

Helping Horse Owners Is What We Do

At Spalding Labs, we’ve been helping farms and stables reduce flies naturally for over 45 years. Our passion is animal well-being—and we’re here to help you every step of the way.

Ready to Get Started?

Achieve a nearly fly-free property with effective, affordable solutions.

Order Fly Predators

Have Questions?

Our team is ready to help you implement your personalized fly control strategy.

Contact a Fly Control Expert

Contact Our Team

Reach out with questions or for a free consultation: 1-888-880-1579