Best Horse Supplements for Fly Control: Five Feed-Through Options
Horse supplements for fly control can help reduce pests by targeting larvae in manure or by providing ingredients intended to deter insects. Formula 707 MultiFly is best for owners seeking novaluron feed-through pellets, while Farnam SimpliFly is designed to interrupt fly development in manure and complement sprays or fly masks. Timber Hills offers natural fly-and-tick supplement options. Compare the active ingredients, intended use, and package size before choosing.
| Product | Best For | Listed Approach |
|---|---|---|
| Formula 707 MultiFly, 10 lb | Longer supply of feed-through pellets | Novaluron insect growth regulator |
| Farnam SimpliFly | Manure-based fly-larvae control | Diflubenzuron feed-through |
| Timber Hills Fly & Tick, 4 lb | Natural pest-deterrent ingredients | Essential oils and natural substances |
| Formula 707 MultiFly, 5 lb | Smaller package of the same pellet formula | Novaluron insect growth regulator |
| Timber Hills Fly & Tick Supplement | Feed-through pest deterrence and skin support | Natural supplement |
Formula 707 MultiFly 10-Pound Pellets
Formula 707 MultiFly is a feed-through pellet supplement with novaluron, described in the product information as an insect growth regulator. It is intended to disrupt the fly life cycle and help reduce fly populations around the barn. The pellets use an alfalfa- and wheat-midd-based formula and are given as one serving daily with feed, according to the listing.
Best for: Horse owners who want the larger listed package of a daily feed-through product. The listing states that the 10-pound bag provides 182 servings, making it a practical option to compare when planning ongoing use.
Consider: This product targets fly development rather than acting as a topical repellent on the horse. Owners seeking immediate, on-horse protection should consider whether additional measures are needed.
Farnam SimpliFly Feed-Through Supplement
Farnam SimpliFly contains diflubenzuron, which the product description says passes through the horse unabsorbed and works in manure to prevent fly larvae from developing into adult flies. This makes it a manure-focused option for a barn fly-control plan.
Best for: Owners who want a feed-through supplement to use alongside other pest-management steps. The listing specifically recommends combining it with topical fly sprays, fly masks, and physical barriers as part of a broader approach.
Consider: The product is not presented as a standalone topical barrier. If flies are already bothering a horse, the listing suggests pairing the supplement with on-horse protection methods.
Timber Hills Equine Fly & Tick, 4 Pound
This Timber Hills supplement is described as a horse-targeted formula with essential oils and other natural substances intended to deter flies and ticks. The listing positions regular use as seasonal pest support. It does not identify a specific active ingredient or explain a manure-based insect-growth-control mechanism.
Best for: Buyers looking for a horse-specific supplement marketed around natural pest deterrents and fly-and-tick coverage. The listed 4-pound package is described as a one-month supply.
Consider: The provided product details do not name the individual oils or give feeding directions. Review the package information to confirm ingredients and use instructions before purchase.
Formula 707 MultiFly 5-Pound Pellets
This is the smaller listed package of Formula 707 MultiFly. It has the same stated novaluron active ingredient and alfalfa- and wheat-midd-based pellets as the 10-pound version. The product information says to administer one serving daily with feed and lists 91 servings in this bag.
Best for: Owners who want the MultiFly formula in a smaller package or prefer to compare a shorter supply before choosing a larger bag. It uses the same stated approach of targeting the fly life cycle through feed-through use.
Consider: The package contains fewer listed servings than the 10-pound option. Compare the serving count and feeding directions on the label when deciding which size suits your routine.
Timber Hills Equine Fly & Tick Supplement
This Timber Hills product is described as a natural feed-through supplement intended to deter flies, ticks, and invasive insects. Its listing also says it supports skin integrity and helps reduce irritation, and refers to studies reporting changes in pest-related behaviors and tick attachment.
Best for: Buyers seeking a feed-through product marketed for multiple pests with additional skin-support claims. It may be worth comparing with the other Timber Hills option if tick coverage is a priority.
Consider: The supplied details do not specify the ingredients, study methods, or feeding amount. Check the product label and consult a veterinarian if your horse has health concerns or takes other supplements.
Buying Guide: How To Choose A Horse Fly-Control Supplement
Does the supplement target flies in manure or on the horse?
Feed-through insect growth regulators such as the novaluron in Formula 707 MultiFly and the diflubenzuron in Farnam SimpliFly are described as targeting fly development, with SimpliFly specifically working in manure. This is different from a topical spray or physical barrier that acts on the horse. Check the product’s stated purpose so expectations match its method.
Should a supplement be the only fly-control measure?
Not necessarily. SimpliFly’s product information recommends using it with sprays, fly masks, and other methods. For any supplement, consider the barn environment and the horse’s immediate exposure, and follow the label. A feed-through product should not be assumed to provide the same type of protection as an on-horse barrier.
Which package size makes sense?
Compare the listed serving count with the label’s daily feeding directions and the number of horses being managed. Formula 707’s 5-pound and 10-pound bags list 91 and 182 servings, respectively. The Timber Hills 4-pound listing describes its package as a one-month supply, but buyers should verify serving directions on the packaging.
What should buyers check before feeding?
Review the complete ingredient panel, feeding directions, and any cautions on the package. Ask a veterinarian about suitability if a horse is pregnant, has a medical condition, or receives other supplements or medications. Do not infer safety or effectiveness beyond the product information and label.
Frequently Asked Questions
How do feed-through fly supplements work?
Some feed-through products use ingredients intended to affect fly larvae in manure and interrupt development into adult flies. The specific mechanism depends on the product’s active ingredient.
Does Farnam SimpliFly repel flies on a horse?
The listing describes SimpliFly as working in manure to prevent larvae from developing. It recommends pairing the supplement with sprays, fly masks, or other barriers for broader pest management.
What is the difference between the two Formula 707 sizes?
The listed products share the same stated formula and daily use directions. The 5-pound bag lists 91 servings, while the 10-pound bag lists 182 servings.
Are natural fly-and-tick supplements the same as insect growth regulators?
No. The Timber Hills listings describe natural pest-deterrent ingredients, while Formula 707 and SimpliFly identify insect growth regulator ingredients. Compare each product’s label and stated purpose.
Can a supplement replace a fly mask or spray?
Do not assume it can. Feed-through products and on-horse barriers work differently, and SimpliFly’s listing recommends combining approaches.