Pros: They worked immediately. My stallion has had a tick and kicked out with his right hind since he was a foal. Years of doing this and I put the chains on and the barn was silent. I am elated I won't worry anymore about capped hocks or broken bones or boards.
Cons: Nothing yet!
Comments: These stopped years of a bad habit instantly. Yet when he stands in his stall he is not being punished.