COVONO Invisible Fence for Dogs,Underground Electric Dog Fence with 650 Ft Wire (in Ground Pet Containment System,IP66 Waterproof and Rechargeable Collar,Shock/Tone Correction) Size:For 1 Dog It uses ultrasonic frequency (22-65Khz)

It uses ultrasonic frequency (22-65Khz) sound waves to drive pest away and takes 3-4 weeks to make effect

and camping trips

No complicated or multiple bungee settings to mess around with

Use for Maternity Pillow

Give them a big supprise

COVONO Invisible Fence for Dogs,Underground Electric Dog Fence with 650 Ft Wire (in Ground Pet Containment System,IP66 Waterproof and Rechargeable Collar,Shock/Tone Correction) Size:For 1 Dog It uses ultrasonic frequency (22-65Khz)COVER UP TO 3 4 ACRE: Comes with 650 feet boundary wire which is thicker and more flexible than the old version,cover up to 3 4 acre, expandable to more area with the purchase of additional wires. You can lay wires in any shape to keep your dog stay where you want it EFFECTIVE DOG TRAINING: The boundary is formed by the signal sent out from the wire by the transmitter. The receiver sends beep and shock as your dog approaches the boundary. The closer