As a scoutmaster we were looking for something super light for backpacking but that would also take care of 10-20 people. Miox is it! Nothing could be lighter or space saving. Directions are simple and easy to follow. Once you do it a few times it becomes second nature for 1 Nalgene bottle for an individual or doing a 5 gallon plastic portable container. The scouts go through water like crazy and once they appreciate the process they learn to conserve. We've done some pretty nasty water over several years with never one case of sickness or down time. The cure for the taste which is not bad--Crystal Light drink packets! You can select from a variety of flavors from Fruit Punch to Lemonades and boys as well as adults can't get enough. The packets are perfectly matched to Nalgene bottles or other containers so no measuring is necessary. Get the Miox, mix in a Crystal light packet and have the tastiest and safe water you'll ever have in the wilds!!!