We used melatonin implants for the first time last year and had mixed results. On a clean Alias steer, we had little to no hair to start with and ended up with not much more.However, since we were at it, we also used it on our lim-flex heifers. Limis are notorious for bad hair coats and no leg hair and these two were not much different. The melatonin did the trick with those two. After about one month, they shed out an entire coat and we were seriously worried. During the second month, the hair grew like crazy and it was super workable. The one won the WI state fair supreme bred & owned female title and looked so much like a club calf that we had tons of steer guys trying to get in on her. We only used the implant version and it gets pricey fast. We paid $20 per implant, and put one in both ears every 30 days. Proof that getting the purple banner is rarely cheap!