Ultrasonic repellers work on the frequences that make animals feel acoustic discomfort and panic. The human ear does not perceive this requency range, but it is excellent heard by animals. These devices make animals stay far away from human habitation, warehouses and storage facilities and it is completely safe for you. Repellers are divided into several types according to the usage: dog, rodent, insects repellers, birdscarers. Since ancient times man lives surrounded by various pests that pose a risk to his health and cause enormous damage to the farm. Pests living next to a man are closer to us and therefore are clearly visible. In addition, their activity sometimes takes a huge scale. Among them we can specify harmful insects, animals and birds. Modern rodent and insects repellers will help you to protect your crop, home and health.