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Fly Formula™

Repel irritating flies and insects from the inside out

332 reviews. 4.8 / 5
  • Reviews
  • Technical
  • Feeding Guide
Guest - 16/08/2025 19:44
My gelding ate it straight away. My mare took a week to get used to it. But both enjoy it now and although only started them on it a month ago I can see a difference. I will be keeping this in their feed all year going forward
Picture of mares head and gelding jumping
Guest - 13/08/2025 23:03
A lot less flies around the horses and not as much itching!! Smells great too!
Moira - 12/08/2025 23:58
Have been using this since late spring this year.  Flies have definitely been less on both my horses so far,  now mid summer.  The total recommended amount hasn't been used as they only need to be fed once a day & I find the full dose would be too much for what else I am feeding, one has just a pellet balancer, the other a joint  supplement.  Will continue to use until autumn.
Guest - 10/08/2025 20:14
Super product,  really helps and my mare doesn't have hives all over her this summer
Guest - 08/08/2025 11:27
Only been feeding it for a few weeks but he seems to be less itchy, maybe a bit early to tell if it is helping to keep the flies away.  It smells great and he eats it in his feed with no issues.
Guest - 07/08/2025 19:23
This really helps keep the flys away.
Very quick delivery too
Guest - 05/08/2025 20:36
Flies this year are horrendous here. The horses have flies on them but less than those not on Fly Formula. It works but nothing is ever going to totally eliminate flies.
Lisa - 04/08/2025 19:05
The best product I've found to help my sweet itch mare, she has it all year round as she's rug free over winter.
Being a veteran at 28 she also has feedmarks best flex ha, still as active as she was 15 years ago, no stiffness, no clicky joints.
Cathie - 01/08/2025 10:57
The flies have been bad this year, but there have been fewer flies on the horses than usual. The product smells lovely and the horses love it. I like it because it’s natural and works all day and doesn’t get washed off in the rain.
Caroline - 31/07/2025 10:16
I considered it feeding Fly Formula in previous years but, for various reasons, didn't do so.
I'm glad that this year I started using it on my ex polo pony as it's really helped repel the flies.

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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.