These all-natural fly collars offer protection for up to 2 months. The collar will give relief from flies that normally swarm around the head. Also, repels fleas, mosquitoes, and ticks.
Labeled for use on cattle, goats, sheep, small ponies, and dogs.
For necks measuring 32" - 40"
This product worked great for the three days it stayed on each of my working steers. The problem lies with the snap fasteners. I would think some type of elastic/velcro or buckle fastener would keep these on cow/steer necks longer. The all-natural ingredients in the repellent work great. Put the collars on in the morning, went back to check a few hours later and what would have been a swarm of black/green/horse flies was noticeably smaller. I'm going to order a couple more, but will rig up a stronger fastening system.