w..tendtronic d0t c0m service at tendtronic d0t c0m $15.9/pcs hidden pet fence pet training collar dog training system electronic fence pet electronics smart fence $10.9/pcs pet training collar dog remote training system multi-function pets electronics smart collar $3.99/pcs anti bark voice-activated stop barking collar Pet collar dog training pet electronics smart collar service at tendtronic dot c0m w..tendtronic d0t c0m service at tendtronic d0t c0m