Hi.

has anyone had anything to do with these gprs dog collar trackers? are they any good?? or any other tracking devices

i use my falconry telemetry on my hounds when they are hunting, its just added peace of mind.

I use a hunting bell on my terrier's collar so I can keep track of his whereabouts in the woods. It can be heard from a surprisingly far distance. My son brought it back from USA earlier in the year and it gives some peace of mind to know roughly where he is when his nose is to the ground and temporary deafness overcomes him.