I used a New Insect Ear Tag this year made by Bayer. It is called Corathon. It is Blue and made out of a material called Fibere Tek. I have had very bad luck. They were put on in early May and are nearly all off now. The only part left is the back peice and the ring that they connect with. They fold and tear veryt easily. I rarely loose hard plastic tags. I think these are junk. Has anybody else had the same problem with this product.