MultiFly Feed-Thru Fly Control

We manufacture MultiFly here in our own facility. Unlike other brands that have to pay a private manufacturer to produce their products, we are able to produce ourselves. The extra savings from this process are passed on to you! 

It depends where you live. We recommend feeding a few weeks before you notice flies in the spring. You can start feeding it during fly season, but you may not see as dramatic of results.

Yes. We highly encourage customers to remove all manure from the premises. The goal is to eliminate any non-treated manure where flies could continue to breed. 

MultiFly is fully registered with the EPA and has undergone significant efficacy and safety studies in order to be approved by the EPA as a registered product that is safe for equines. 

The active ingredient in MultiFly is Novaluron.  This ingredient is widely used in agriculture due to its high safety profile and low toxicity risk.  While this ingredient has been tested in non-equines (e.g., cattle, goats, etc.), we are not able to make any claims about safety/efficacy for any species other than equines.  We recommend that you contact your veterinarian before administering to any other species. 

MultiFly has been proven effective at breaking the fly life cycle of house and stable flies.

Garlic-based supplements for fly control are targeted at only repelling the flies from the horse as its absorbed into the horse. They do nothing for reducing the overall fly population. It is also argued that garlic has insufficient efficacy claims.

MultiFly works by breaking the fly life cycle of flies in the manure of treated horses, thus reducing the overall population. MultiFly is not absorbed into the horse, and does not inherently act as a repellent to the horse itself.

For the average equine at 1100 lbs or less, feed 1 scoop daily. For especially small animals (e.g. 550 lbs or less) you may feed half a scoop. For equines over 1100 lbs, feed 2 scoops daily.

Both are nearly identical in efficacy and safety claims. The main difference is the Insect Growth Regulator (IGR) they both use. MultiFly uses Novaluron, and Simplifly uses Diflubenzuron. Both IGR's do the same thing - they stop larvae in manure from forming into adult flies. However, MultiFly is significantly less, at $0.36 per day, versus $0.46/day for a 10 lb bucket of Farnam Simplifly®.

For horse owners who are currently using Simplifly®and would like to switch over to MultiFly, it is safe to do that immediately.

If you aren't happy with the results of MultiFly, simply reach out to us, and we will be more than happy to make it right with our 100% 90-day satisfaction guarantee.

To get free shipping, spend $100 or more in a single purchase, and it will automatically be applied!

Yes - you can change or cancel your autoship anytime by logging into your account, or reaching out to us.

We know many customers have pets that like to eat horse manure. However, we are not able to make any claims regarding safety/efficacy for any other animal other than horses. With that being said, Novaluron (the active ingredient in MultiFly) has undergone rigorous safety and efficacy studies, even for food-chain animals, and has been approved for commercial poultry operations. 

Novaluron is a benzophenyl urea, which is not chemically similar to urea found in cattle feed.

MultiFly contains an Insect Growth Regulator, Novaluron. Novaluron's sole purpose in agriculture is to stop flies from forming their exoskeleton - and thus breaking the life cycle. There are no known sedative effects of novaluron.

We always urge customers to reach out to their respective association if they would like to check. We have many customers in different associations that show while on this product and have never had a reported issue.

The active ingredient in MultiFly is novaluron, which works as a chitin synthesis inhibitor. The exoskeleton of all insects contain chitin. Insects that reproduce directly in manure will likely be affected. 

The active ingredient in MultiFly is Novaluron, which works as a chitin synthesis inhibitor. The exoskeleton of all insects contain chitin. Insects that reproduce directly in manure will likely be affected. Since bees reproduce in their hives, bees are unlikely to be affected.

Novaluron is also not systemic - meaning that it cannot be absorbed by plants. Bees and other pollinators will not ingest novaluron through plants.

The active ingredient in MultiFly is Novaluron. Novaluron is not systemic, meaning that it is not absorbed by the plant from the soil. Plants that are exposed to novaluron (in the soil, compost, etc.) will not have any novaluron content present in leaves, stems, etc. Manure treated with MultiFly is safe for vegetables, fruits, and other vegetation. Novaluron itself is widely used in U.S. agriculture for food crops.

In regards to organic gardening - we ask that you reach out to the USDA for clarification for your operation.

The active ingredient, Novaluron, is moderately toxic to fish and very toxic to aquatic invertebrate organisms (e.g. shrimp, crawfish).

Care should always be taken to prevent manure from entering aquifers and bodies of water - regardless if the manure has been treated with a feed-through fly control product. We'd recommend you reach out to your state extension office for guidance on manure management.

A single-serving of MultiFly is very small at about just 0.88 oz. The pellets are low in nonstructural carbohydrates. 

We'd recommend you reach out to your veterinarian if you're concerned. We know of many metabolic horses that have been on the product per their vet's recommendation.

The best results are when the entire facility and adjacent facilities are on MultiFly - as it stops flies from producing in all manure. It can be tough when your neighbors aren't on the product, as flies can and do travel between farms. Dependent on their proximity and their manure management, you will likely still see a difference in the fly population, albeit not as much as if you were the only one for miles! 

Unfortunately, MultiFly works best when all horses on the premises are on the product. Since flies would still be able to reproduce in the manure of other horses at the barn, it will be unlikely to make a difference.

Speak to your barn manager about getting a whole-barn program started!

No - MultiFly is ineffective towards existing adult flies. MultiFly is not a fly repellant - rather it is an Insect Growth Regulator that stops flies from reproducing in manure.

Since MultiFly is a newer product, it isn't in a lot of brick & mortar stores - yet. Feel free to let your local store know if you'd like to see the product on the store shelves! They can apply to become a retailer by reaching out to us at [email protected]

Some of our customers start seeing results in as little as three days, but most people see significant results in two to four weeks, since that is around the average lifecycle of a fly.

Fly predators and MultiFly essentially serve the same purpose: to stop the fly life cycle so the population is reduced. 

We do have customers that use both in conjunction and have great results. Best practices would be to avoid spreading fly predators on manure with MultiFly.

Many of our customers feed MultiFly to pregnant/lactating mares. However, we do recommend getting the opinion of your veterinarian first! 

We'd recommend consulting your veterinarian before feeding MultiFly to breeding stallions.