There are many deer whistles on the market. The question, however, is not how many different products are available, but how many of them were actually designed and tested with the real conditions of operation in mind. Wildlife collisions are a serious road-safety problem: a single collision can cause major property damage and, in extreme cases, personal injury. But there is a fundamental question that is asked far less often: Are these devices mounted in the right place on the vehicle?

The grille is not ideal. With many traditional deer whistles, the grille or the front of the vehicle is the recommended mounting location. That may seem obvious, but airflow at the front of a moving vehicle changes significantly. The air can slow down, be deflected, stagnate, or form turbulent zones. If a deer whistle depends on airflow to operate, it matters whether enough airflow actually reaches the device. This is not a marketing question. It is aerodynamics.

How many deer whistles have actually been tested? Many products on the market promise range, ultrasonic technology, or effective wildlife warning. Consumers are right to ask: Where and under what conditions were they tested? At what speed? In what airflow? With which animals and by what method? In developing SENNA, the focus was therefore not only the device itself, but also where and under what conditions it operates.

SENNA ANIMAL STOP is designed to be mounted in the active airflow zone beneath the vehicle, where the oncoming airflow reaches the device more directly. According to the manufacturer specification, it activates above 37 mph and has a stated range of up to 650 ft. SENNA also provides a collision guarantee of up to $1,000 when the guarantee conditions are met and a qualifying wildlife collision still occurs. With SENNA, placement is not a minor instruction. It is part of the operating concept. Because with a deer whistle, the most important question is not how many devices are on the market. It is how many were actually designed to work.