FREE: Bark off - teach your dog not to bark

The listing, Bark off - teach your dog not to bark has ended.

Bark Off is an effective and humane way to teach any dog not to bark.

This brand new ingenious, ultrasonic training aid helps you show your dog when it's OK to bark and when it's not.
When your dog starts yelping, the noise triggers the Bark Off.
It makes an ultrasonic, high-pitch frequency sound that is inaudible to human ears.
The noise gets your dog's attention and disrupts the barking pattern to quiet it down.
The Bark Off is effective up to 20 feet.
Your dog will quickly learn the difference between nuisance barking and barking to alert your family to trouble.
The compact unit (4" x 1-1/2" x 1") can be wall mounted or carried in your hand.
It has 2 sensitivity levels so you can adjust it to match the sound level of your dog's barking.
Bark Off is portable so you can take it with you on walks.
Requires one 9-Volt battery.
This retails for 19.99 $ - here your chance to get it for much cheaper.
Feel free to ask if any questions .