When physical deterrents are not an option, TONI provides proven solutions that take advantage of birds' reaction to disturbing sounds.
Audible Acoustic Solutions
Audible bird control devices replay a combination of attack calls of predators and distress calls of prey, convincing birds that they are in danger and need to flee.
Ultrasonic Acoustic Solutions
Acoustic methods are effective, but can irritate more than just birds. TONI'S Ultrasonic Solutions use frequences which birds can hear, but the human ear cannot.