This will be my 3rd year of using them, will never go out when the temp warrants them to be used ever again. In my experience, wear one pair of decent wool socks and good set of rubber boots. I always wear my in, not sure I would want to be removing a boot while in the stand (scent and movement). As soon as I get up in my stand, I turn them on and depending on temp will cover my boots with Artic Shield boot covers. My feet used to always be a problem, but with this system, I have never had my toes come even close to getting cold, no matter what the temp. I do agree that if your feet are already cold, then the Thermacell will NOT catch them back up, it is really just a light trickle of heat that maintains your warmth, but does not make your feet sweat.