Suitable for dogs from 6 months old to 8 years old. When the device works on 3 frequency levels,the light will flash blue every 6 seconds. The red light stays on 3 seconds when the sonic bark deterrent is triggered by barking.
eBay
🐶Safe for Dogs & Humans - The most humane and used widely way to keep your dog or your neighbor's dog from barking. The ultrasound of the anti barking device will not cause interference or harm to humans, because humans can not hear these frequency bands, but dogs will be sensitive to these ultrasounds.
eBay
Can be hung on a tree, indoor, or outdoor wall, or fence to prevent dog barking (within range). An ultrasonic anti-barking device can automatically detect dog barks 50 feet away. 1 x Anti-bark device.
eBay
Adjustable Pitch Dog Whistle Silent Whistles to Stop Barking Training. for Dog Training Recall Barking Deterrent Devices. - You can adjust the frequency rod of your whistle to find the pitch that your dog best responds to.
eBay
MOST EFFECTIVE ANTI BARK - This device high sensitive microphone isolates and detects barking up to 50 feet away, automatically emitting an ultrasonic sound wave to deter nuisance barking. Effective for all sizes and breeds of dogs.
eBay
Battery not include!
eBay
Instructions: When the dog barks, after starting the device, press the ultra-shenwave low decibel or high decibel button, and the speaker will emit ultrasonic waves to stimulate the dog's hearing to feel uncomfortable and realize that it can no longer bark.
eBay
They're safe for dogs 5-120 lbs, from 6 months to 8 years old. The ergonomic design fits nicely in your hand, while a carabiner lets you take this ultrasonic dog bark deterrent anywhere. It has sound and ultrasonic modes with a frequency of 25 kHz that's hard for humans to hear.
eBay