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Fly Formula™

Repel irritating flies and insects from the inside out

306 reviews. 4.8 / 5
  • Reviews
  • Technical
  • Feeding Guide
Lynsey - 10/06/2025 20:08
Always notice a difference with the flies when they start on fly formula in the spring / summer
Sarah - 09/06/2025 09:43
Brilliant product and very effective
Guest - 04/06/2025 08:23
Yet to find out no flies yet
Anne - 30/05/2025 20:46
Have used this product for the last year. My fussy mare wouldnt eat her tea but by adding fly formula she eats it. Not bothered by flies Reuther. Pretty good.
Guest - 23/05/2025 21:17
Love this product and I no longer need to use a fly spray!!! Saving a fortune!!!
Guest - 22/05/2025 21:19
I have used fly formula for several years now and it definitely makes a difference although it doesn't completely eliminate the problem . It seems very palatable as I have never had any horse or pony refuse to eat it . All in all a great product
Guest - 13/05/2025 12:52
Fly formula smells amazing, very palatable. My fussy boy really likes it. It’s taken two and a half weeks feeding daily to see any real difference in the number of flys on my boy but there are definitely less than before I started using fly formula. It’s really just the little midges that bother him now. Overall I’m pleased with fly formula.
Guest - 10/05/2025 08:26
Seems to deter the flys and the horses smell of it
Diane - 10/05/2025 00:33
Used this last year and horse had hardly any fly bites, way better than any sprays I have previously used.
Guest - 09/05/2025 10:45
Highly effective highly paletable

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Nutrition Information

Fly Formula™ is an oral fly deterring supplement, designed to reduce irritation from flies. When ingested on a daily basis, the pungent aroma of the ingredients passes through the skin to discourage flies.

Garlic granules contain a Sulphur compound, which is secreted through the skin. Insects taste via their feet, and those landing on the horse dislike this Sulphur, and so are less likely to bite the horse. The added Fenugreek seeds potentiate this effect, and along with other aromatic herbs known to be disliked by insects, such as Lemon peel, Peppermint and Rosemary, help to repel unwanted attention. In addition to this, ingredients that optimise skin health, such as Chamomile, Nettle, and Linseed help to soothe any areas affected by pesky flies.

Composition

Garlic granules, Micronised linseed, Mint leaves, Rosemary leaves, Lemon peel, Chamomile flowers, Fenugreek seeds, Nettle leaves, Peppermint powder.

Additives

  Additive number per kg
Digestive enhancers    
Yea-Sacc live yeast (Saccharomyces cerevisiae CBS 493.94) 4a1704 5,300,000,000cfu

Analytical

Crude protein 18.4%
Crude oils & fats 8.3%
Crude fibre  8.8%
Crude ash 5.1%
Sodium  <0.1%

Feeding Guide

 

Weight of Horse/Pony         Amount per day                                              
Up to 250kg 1 scoop
250kg - 400kg 1 ½ scoops
400kg - 600kg 2 scoops
Over 600kg 2 ½ scoops

 

1 level (50ml) scoop of Fly Formula™weighs approximately 23.5g

Feed supplements should be fed according to body weight. Introduce to the horse's diet gradually, splitting between feeds (when applicable).

Fly Formula™is a complementary feeding stuff for equine animals. Feedmark uses nothing in the formulation of this product that contravenes competition rules.