Product Description

Solitude IGR is a feed-through fly preventive which, when mixed 1/2 oz into a horse’s ration daily according to the directions, will prevent house and stable fly development. Repeated studies show up to 100% efficacy in inhibiting larvae development. Significant results may be observed within 2 weeks but the full benefit should be realized within 4-6 weeks of administration as the adult populations die off. Solitude IGR is intended for use only in equidae including horses, mules and donkeys. Cyromazine, the active ingredient in Solitude IGR, is an insect growth regulator that works on the fly’s chitin exoskeleton and is very species specific to house and stable flies. As the horse is administered cyromazine, it passes through the horse and is excreted in the manure. House flies and stable flies lay their eggs in the manure and the eggs subsequently hatch into the larval or maggot stage. (Cyromazine has no effect on the chitin of the adult fly.) As the maturing maggots feed on the manure treated with cyromazine, they become unable to successfully develop into adult flies because cyromazine inhibits the proper formation of chitin. The immature stage of the fly dies. Cyromazine has a well documented safety and efficacy profile. It has been extensively evaluated in horses since 2001 as well as intensely studied in other species for more than 20 years. Numerous environmental studies have documented cyromazine’s safety for mammals including humans and horses, as well as birds, daphnia, minnows and other indicator species. Once excreted, Solitude IGR breaks down to a melamine monomer, a slow release nitrogen fertilizer. Conventional pesticides may still occasionally be helpful to deal with other migratory adult flies coming through your facility from neighboring areas. Topical pesticides and misting systems will help control these adult flies, however, the use of these products may be significantly and safely reduced when used in conjunction with Solitude IGR.

Solitude IGR (cyromazine) is a non-organophosphate that has been safely used in horses since 2001 and undergone extensive research to prove its effectiveness and safety. Studies have proven it is 99.5% effective against stable flies and 100% effective against house flies with no effect on horses, other mammals or beneficial insects. Greatly reduces the use of neurotoxic pesticide sprays and overhead fly systems creating a healthier environment for horses, staff and riders Cost effective and easy-to-use; just add 1/2 oz into your horse’s daily feed regardless of your horse’s breed or size. Creates healthier environment for horses as threats from infectious disease vectors are minimized. Reduces stress on horses caused by fly infestation.

Active Ingredient:

IngredientPer ServingPer Pound
Cyromazine (N-Cyclopropyl-1, 3,5-triazine-2,4,6-triamine)2.12%

Inactive Ingredients

Alfalfa, wheat shorts, and molasses (feed blend); mycocurb (feed preservative)


Read the entire “Directions for Use” before using the product. Failure to follow directions and precautions on the label may result in poor fly control. Do not use on horses intended for slaughter for food. It is a violation of Federal law to use this product in a manner inconsistent with its labeling. Keep out of reach of children. Do not contaminate water, food, or feed by storage and disposal.