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Fly Formula™

Repel irritating flies and insects from the inside out

150 reviews. 4.8 / 5
Jane - 10/03/2024 09:05
Get into system as we early flies
Guest - 19/01/2024 12:01
Used this product for a few years now and definitely does help
Guest - 04/01/2024 15:27
Does the trick! Pony calmer!
Guest - 27/09/2023 16:32
This is a good supplement for my mare who has sweet-itch. I have used it alongside other measures this year to reduce her symptoms. She likes it in her feed. It smells lovely!
Lorraine - 27/09/2023 15:22
I definitely use less fly spray since using this product
Josephine - 25/09/2023 14:12
Palatable I hope that it reduces fly bites, but it needs more time.
Allison - 21/09/2023 08:21
Very good product, easy use
Jane - 20/09/2023 17:31
Good product suits my horses
Linda - 20/07/2023 07:09
This was a reorder as I use this product in conjunction with fly spray to keep my pony protected from the flies.
Guest - 19/07/2023 14:43
Helps to deter flies in the hot weather

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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. The proven probiotic, Yea-Sacc®, ensures maximum absorption of the desired nutrients.


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


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


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.