Justifly Salt Block

A simple, low‑stress way to control stable flies all season long. Each 44‑lb Fly‑A‑Salt Block provides up to 700 feedings—enough for 7 cows for 3 months. Approved for cattle at all life stages, this continuous‑use salt block requires no handling, no oily sprays, no pour‑ons, and no dust bags. Cattle ingest the larvicide naturally as they consume the salt; it passes through the animal and targets flies in the manure. Safe for dung beetles, with no withdrawal period, and costs less than 6 cents per head per day.