You can now greatly reduce the chances of becoming one of the high number of automobile and animal collisions that occur on our highways each year. Sonic animal repellers work day and night, automatically, nothing to turn on. At speeds over 50kph, sonic animal repellers emit high frequency sound waves that warn animals away from oncoming vehicles.Sonic animal repellers is most effective up to 400 meters away depending on terrain and weather conditions. Comes completely assembled and easy to install. Peel off protective paper from one side of self-adhesive tape and stick on bottom of the sonic animal repeller, then peel off protective paper from the other side and stick on a clean, dry, and flat surface of vehicle. Examples: Front bumper and fenders.