Kevin get the permectin 11. Get a spray bottle put half permectrin and half water. shake it up spray in between shoulder blades and on the base of the tail. Those cattle tags runs through the dogs blood stream a wise man Sonny Cerny told me about this a few years ago. Permectrin is the active ingredient in cattle tags. Not to mention gona save u a bunch of money buying the permectrin instead of cattle tags. Call me buddy if you got any questions. Now i need some help with fleas i cant find the real admire from years ago all i can find is some green admire 2 its junk.