Ok, I guess I'll go the filter route. the First need Purifier has an operating temp of 33 to about 100 and something. I'm worried that it's possible to have some moisture in it and it'll freeze and bust or that it may get more than 110 or even more in the vehicle. I guess I could keep it in the house, but that at least in my thinking would defeat the purpose of having it with us when we're out and about. Ok, now for the biggie. What would be a good way to store a couple three or four ounces of bleach without it leaking out over everything? I have a couple of small bottles but they have a paper type "seal", sort of like the original clorox bottles have. Would that work? <img src="/ubbthreads/images/graemlins/confused.gif" alt="" />