TherioDerm Sweet Itch-Insect Block TherioDerm Sweet Itch-Insect Block is a 100% natural, oil-based formula specially developed to provide powerful, long-lasting insect repellent protection for horses suffering from sweet itch (insect bite hypersensitivity) and irritation from midges, flies, and other biting pests.
This gentle, plant-powered solution absorbs quickly and deeply into the skin and coat to create a natural barrier that repels insects effectively, reducing the frequency and severity of bites that trigger intense itching and rubbing. By keeping pests at bay, it helps break the vicious itch-scratch cycle while soothing inflamed skin on contact, calming discomfort, supporting the healing of rubbed or broken areas, and promoting a smoother, shinier, healthier coat.
Free from harsh chemicals and steroids, Sweet Itch-Insect Block offers clean, nurturing care that strengthens the skin’s natural defenses and delivers real relief without compromising your horse’s well-being. Many horses show visible improvement — from irritated, uneven and miserable to comfortable, glowing and itch-free — within as little as 2 weeks when used consistently.
Directions for Use For the first week, apply generously daily to affected areas including the mane, tail, belly, sheath/udder region and any other high-risk or irritated spots. Thereafter, apply every second day (or as needed) to maintain strong insect-repellent protection, especially during peak midge and fly season. Perfect for sensitive horses that struggle seasonally, this product helps your horse enjoy turnout and rides with far less frustration and discomfort.