I wonder if they will work outside?
http://www.opentip.com/products/PetSafe_Ultrasonic_Bark_Control_Dog_Radio_Fence_Pet_Supplies_Home_Garden-642893.html
Main Description:
The Ultrasonic Bark Control unit controls indoor barking and no collar
is needed!This unit creates a "Bark Free" zone for one or more dogs.
The device emits a loud ultrasonic tone that only dogs can hear. This
unit is activated by the dogs bark or manually by the owner.Features:
Unobtrusive table top unit for indoor use, no collar needed Creates a
bark-free zone for one or more dogs. Device emits loud ultrasonic tone
that only dogs can hear Activated by dogs bark or manually by the
owner Uses Ultrasonic sound that humans cannot hear! 9V battery
operation - (battery not included)
http://www.opentip.com/products/PetSafe_Ultrasonic_Bark_Control_Dog_Radio_Fence_Pet_Supplies_Home_Garden-642893.html
Main Description:
The Ultrasonic Bark Control unit controls indoor barking and no collar
is needed!This unit creates a "Bark Free" zone for one or more dogs.
The device emits a loud ultrasonic tone that only dogs can hear. This
unit is activated by the dogs bark or manually by the owner.Features:
Unobtrusive table top unit for indoor use, no collar needed Creates a
bark-free zone for one or more dogs. Device emits loud ultrasonic tone
that only dogs can hear Activated by dogs bark or manually by the
owner Uses Ultrasonic sound that humans cannot hear! 9V battery
operation - (battery not included)
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