Effective bark control without collars
Features:

Indoor/outdoor use
25 ft range
Two year warranty
Eliminate annoying barking of dogs within 25 feet with the unique, wall-mountable Bark Free. Bark Solver automatically activates in response to barking and emits either ultrasonic or audible sounds (as selected by user). Unit may be used indoors or out and may be adjusted to respond to a range of barking noise, from low level to loud. Great alternative to electronic training collars. Ideal for use in breeding kennels and multiple-dog homes. Comes with wall-mount bracket, extra long 50' cord, vinyl rain cover and AC adaptor. Measures 4 1/2"W x 1 1/2"D x 5 1/2"H.

Delivery:
Inside USA $18.50
Worldwide  $52.00