Bill, <br><br>Personally, I would switch iodine and chlorine. <br><br>I think it might be a good idea to state that it is in the order of preference, and that none are preferable to mechanically filtered water from a quality filter (it's just barely possible that one one of your scouts may have a filter in addition to his PSK in a survival situation). I'm sorry if it seems that I'm assuming your scouts are stupid. I don't think that at all, just trying to cover all the bases. I'm looking at trying get my oldest boy into the scouts now. I don't mind him going into the woods (it's actually my preference), I just want him coming back.<br><br>I'm sorry, I have no idea how to help with the color question, I had never considered that the use of PP should be that specifc...maybe I should. <br><br>In any event, keep up the good work and thanks again,<br><br>Andy