The powerful but silent electronic, ultrasonic bird & Pigeon repeller / deterrent is very effective with a 150ft range. The ultrasonic repeller is effective against most bird species including Starling, Rook, Pigeon, etc. and can help prevent damage to fruit trees, grain stores, gardens and property etc by repelling birds with the ultrasonic sound.
This variable frequency ultrasonic repeller produces a pulsating and aggressive ultrasonic sound similar to a siren which many animals perceive as extremely unpleasant and therefore avoid.
The repeller is supplied with a mains adaptor and wall mounting bracket and can be swivelled & tilted to suit directional requirements. It is waterproof for outside use.
The main reason why this ultrasonic repeller / deterrent stands head and shoulders above other models is because the frequency is adjustable. The user can very easily adjust the sound to get the optimum effect for the creature you are trying to repel.
And because the frequency of the ultrasonic unit is adjustable, it can also be made to repel cats, rats, mice, squirrels etc, Please note that it can only be set to repel one animal type at a time. In other words, it can't repel cats and mice etc, at the same time because animals have different hearing ranges.