Do the birds become accustomed to the sounds or the visual repellers?
Birds and pests are smart and stubborn. They often get used to, and therefore don’t fear, visual devices that don’t move or sound repellers that don’t change pattern. Our visual deterrents move and change with the wind and light, and some have always-changing holographic printing or patterns to further confuse birds. Our sound repellents vary their frequency, intermittence, hours of operation and more, and furthermore, they are user adjustable for different situations. This prevents birds from becoming acclimated to the repellers.