How It Works The Balcony Gard is a low-profile bird control device that uses ultrasonic sound waves (silent to most humans, high-pitched and irritating to birds) to force away unwanted pest birds & small animals. The emitted sounds annoy pest…
How It Works The Balcony Gard is a low-profile bird control device that uses ultrasonic sound waves (silent to most humans, high-pitched and irritating to birds) to force away unwanted pest birds & small animals. The emitted sounds annoy pest…