Honestly, putting chemicals on their back, and into their systems through vaccine, is just as 'bad' as having  a collar around their neck.  But I agree that I've never been a fan of the collars (mostly just because the ones that are out aren't really safe, IMO).   
I've never heard of this one though.  I'd actually prefer to put on a tick collar when I knew we were going to be out in areas where they'd be more likely, vs. putting something like advantix on his back to last for the whole month. I'll have to look into this.        |