Having read all the bad news about mozzies in Bali and the increased risk of dengue fever - i was wondering if anyone has used the Mozzie repellent bands in Bali and found them useful? They are little rubber bracelet type things that are impregnated with either citronella or peppermint oil and they are supposed to keep you protected from bites. i thought they may be useful to put on my kids - particularly during the day when they dont usually wear any repellent?