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 Sue Baccam

I have two nine month old kittens. We live on nearly 4 acres with neighbors on either side and across the street. We also have many wild animals including coyotes, foxes, owls and eagles, any of which our cats could hunt for as their next meal. As responsible pet owners, we wanted to humanely teach our cats where their territory is (without disturbing the neighbors). They quickly learned that when they heard the beep, they had to turn and back off. Of course, given her feline nature, we should keep an eye on her. If they can get away with it, they will. Excellent product, very happy with my purchase.