Dogtra YS-300 vs Petrainer PET-850 Shock Collars Oct 16, 2014 Dogtra's YS-300 up against our Petrainer PET-850 Automatic Shock Collar We know which one you will choose. You mite even decide to Buy two of our PET-850 Collars! Share Share on Facebook Tweet Tweet on Twitter Pin it Pin on Pinterest
