Red light is pretty much invisible to a lot of animals. works great on rabbits and hares (doesn't stop their other scenes which tend to be more accute) can't see why you'd need more than a head lamp for possums. they just run up the nearest tree or fence post. don't put anything on ya springer, it's all just weight that affects how it shoots. (unless it's sighted in with them on, then it's off when you remove them) we'll that's been my experience in the past anyways
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