The only practical way to destroy one of your devices would be to repeatedly pummel it with a hammer or to shoot it.

We have been looking for a signaling device that would enable us to move away from our costly, dangerous and harmful flares. Your product passed our test & evaluation procedures with flying colors. We dropped and threw your device on the ground from various heights–it kept on signaling. We used this device in pools of diesel fuel–it kept on signaling. We immersed it in water and ran it over at the same time–it kept on signaling. In my opinion, the only practical way to destroy one of your devices would be to repeatedly pummel it with a hammer or to shoot it. In our experience, this device is “cop-proof.”