Radio activated guard box

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Radio activated guard (RAG) boxes are experimental devices intended to deter wolves from preying on livestock. Specifically, they are designed to work against wolves which have been fitted with radio tracking collars prior to being re-released into the wild (and, by extension, the packs of which they are members). The device was conceived by an unidentified rancher from Montana.

The RAG box is an "aversive training device." It features a strobe light and two loudspeakers which emit an annoying noise; these are activated when the box detects the signal from a radio collar at short range. The lights and noise scare off the wolf pack.

In the field, the RAG box has thus far proven effective in principle. Cost has, however, proven a hindrance, as multiple RAG boxes are required to cover the perimater on even a relatively small area of pasturage.