Review on GoodBoy Small Size Remote Dog Collar - Beep, Vibration, and Shock Modes – Effective Pet Behavior Training Tool - Waterproof & 1000 Feet Range - Suitable for Dogs Over 10 lbs - Small, Medium or Large Size by Lucy Baker

It was the best investment! Our new puppy was always biting and scratching and I mean it was pretty awful and very painful with those sharp teeth. With this vibrating device, he turned into another dog. Since he doubled we set the vibration to 2 and it's so much easier to get him to stop bad behavior and get him to come outside or not dig holes or chew things which he shouldn't etc. We are so glad it doesn't harm our pet but gets him to stop what he is doing and listen to our commands now. Would definitely recommend and will definitely buy again.