Ultrasonic Devices
Ultrasonic devices put out sound frequency that can only be heard by animals, not people. When animals are exposed to their irritating or loud sounds they tend to stay away-just like you wouldn't buy an apartment near a busy airport if you had a choice. Both outdoors and indoors, ultrasound is blocked or reduced by obstructions (it is completely blocked by walls) so ultrasonic devices work better in clear rather than cluttered landscapes and homes.
The Yard Gard and Animal Away can be used indoors or outdoors but the Victor Pest Chaser is for indoor use only. See product details for more information.
