Aquamira Water Purifier Tablets by McNett Chlorine Dioxide water treatment tablets; provide safe drinking water everywhere Perfect for emergency kits, foreign travel, backcountry and outdoor activities; one tablet treats one liter of water Kills 99.99% of bacteria, viruses and cysts including Giardia and Cryptosporidium also improves taste and removes odors Kills waterborne pathogens better than iodine or chlorine bleach with no strange aftertaste