Anti Barking Device,ultrasonic Dog Stop Barking Deterrent Devices

POSITIVE AND NEGATIVE TONE: This ultrasonic training system is the ideal training device^ WITHOUT ELECTRIC COLLAR: This remote trainer works completely without a collar. ^ WATER RESISTANT: Since the remote trainer is water resistant, you can use it indoors and outdoors without any problems. The ultrasonic sound is inaudible to most people, similar to a dog whistle^