I have 3 ferrets with implants. All had hair regrowth within a month, more energy and improved dispositions. I have an 8 1/2 year old who got one last month and she's bouncing around like a kit. Another one has had the implant for +2 years and it is still working well. My one vet charges $135 plus visit for them, but she buys in large quantities. In smaller quantities it would have cost my local vet $200 total. Valerie Williams Owned by ferrets for 27 years and counting! [Posted in FML 7698]