Look for ultrason x.
Yard sentinel ultrasonic repeller for crows.
Sounds like a murder robot but actually isn t.
Ultrasonic blasts in the upper end of the frequency range are intolerable to the aforementioned animals.
The yard sentinel features a sturdy weather resistant design intelligent power system which switches to backup battery in the case of power failure and is easy to mount for maximum effectiveness.
Yard sentinel by aspectek is the most advanced diy ultrasonic outdoor pest repeller able to target your specific pests.
The device can repel pests with the help of ultrasound and sound besides it has a motion sensor which can detect animals drawing near the device.
The first and most popular ultrasonic electronic pest deterrent on the market with coverage up to 5 000 square feet.
With a variety of settings the yard sentinel keeps unwanted critters out of its protective area by blasting a varying range of high pressure frequencies and alarm sounds.
The working principle of this original device by aspektek is easy to understand.
Offers up to 5000 sq.
Play crow distress or alarm calls on a portable stereo to get rid of crows.
Aspectek yard sentinel 2 pack outdoor ultrasonic animal control pest repeller includes ac adapter extension cord.
The sound of crows in distress tells the nuisance birds there s potential danger in the area making them think twice.
3 3 out of 5 stars 429.
Uses harmless ultrasonic sound waves to annoy and repel pests.
Ultrasonic crow repellent these systems are designed for outdoor year round use and use ultrasonic you can t hear them sound waves to annoy repel and frighten a wide variety of birds including crows.
See our full review and more.
Plus it won t bother your indoor pets.