SubscribeGift a Sub
Enable cache 100
Horse Pest Control

April 2020 SmartPak SmartTip of the Month: Controlling Flies from all Angles

Nothing ruins a day at the barn faster than bothersome flies. In addition to being a nuisance, insects can cause skin conditions and other health issues.



Some common concerns include allergies, hives, Sweet Itch, and Summer Sores. Horses can develop allergies and/or hives from a wide variety of environmental factors, including insects such as black flies, horn flies, and stable flies. Sweet Itch, also known as “summer itch” or summer seasonal recurrent dermatitis is an allergic reaction to the Culicoides biting midge or “no-see-um” gnat. Summer Sores or “Fly Sores” is caused by infection of the skin by the larvae of the large-mouth stomach worm Habronema (and Draschia).



A comprehensive fly control program incorporates strategies like manure management, protective clothing for horses, fly sprays, etc. Daily supplements like IGRs (Insect Growth Regulators) and defense supplements are another smart addition to building your horse’s no fly zone.

An IGR supplement is a feed-through option that prevents the development of house and stable flies. The supplement safely passes through the horse’s system and is excreted in the manure, regulating house and stable fly egg development and as existing adult flies die off, the overall fly population is significantly reduced within just 4 to 6 weeks.

SmartPak Insect Defense SupplementSmartPak Insect Defense Supplement
SmartPak SmartBug-Off Ultra Pellets. Photo Courtesy SmartPak

An insect defense supplement can help to provide extra support against flies by making the horse unappealing to these biting bugs. The formulas for these supplements often include garlic, apple cider vinegar, and brewer’s yeast. (But, contrary to popular belief, they won’t make your horse smell like an Italian restaurant; most riders don’t even notice a difference!) SmartBug-Off Ultra Pellets provide the most comprehensive support available for horses who are bothered by flies and other pests.

This multi-pronged approach:

◆ Provides higher levels of key ingredients in the original SmartBug-Off formula
◆ Supports resilient skin and a normal inflammatory response with increased levels of MSM and Omega 3s
◆ Can be used for just one horse, or the entire barn!
◆ Comes in a tasty pellet with no added sugar!

These supplements reach their full benefit in about 4-6 weeks. It’s okay if it doesn’t kick in right away. Just keep an eye on your horse over the first several weeks for how he looks and feels in spite of the bugs.

Read more tips from SmartPak.

Horse Illustrated Advertorial

Horse Illustrated’s trusted partners bring readers important information about cool new products, research, and ways to better care for your horse and your horse’s home.

Recent Posts

The Working Mules of our Public Lands

Flopping ears bounce with every step down the trail as a string of six mules begin the trek from the…

2 days ago

Sabrina Lewis and Her Crowning Achievements

Speaking on a stage surrounded by the glitz and glamour of the Miss America Pageant, Sabrina Lewis stands out with…

3 days ago

Equine Insurance Policies

Insurance. It’s a fact of life for most adults. We insure our vehicles, homes, businesses—even our smartphones. We buy life…

4 days ago

2025 Defender Kentucky Three-Day Event

Stay up to date on the action from the 2025 Defender Kentucky Three-Day Event. Find information about the event, including…

4 days ago

Cosequin® Lexington 4*-S at Defender Kentucky Three-Day Event presented by MARS Equestrian™ to Serve as US Equestrian Open Eventing Series Qualifier

Lexington, Ky. — This year’s Cosequin® Lexington 4*-S will serve as a US Equestrian Open Eventing Series Qualifier when the…

4 days ago

Ten Magical Days in Ocala: From Live Oak International to Longines League of Nations & More Horsey Adventures

Much like the cream center of an Oreo cookie, there is a sweet spot in the middle of Ocala winter…

4 days ago