I have used them for a few yrs with no trouble. My vet saw one on one of my dogs this yr and told me to take them all off that I would end up killing one. Said he used to use them too. Sure enough I didn't listen and had a 2 yr old gyp get sick. Made an apt to get her checked out and she was dead when I went to get her. Don't know for sure that the tag did it but I cut all mine off my other dogs. I didn't take her in after the fact but have a feeling the tag didn't help
That's right there made for cows not dogs but I had a vet tell me it ruins there liver but if u want to use them still
Will post pics of the way I do blank tags with my name and number on them when hunting
