A couple years ago I saw those pint or quart, squirt bottle lookin, water purifiers in some ad somewhere. Suggested it to my wife for xmas. She couldn' t find any. I haven' t seen them anywhere since! Did they find out that they didn' t work so well, or am I just looking in the wrong places? I don' t like the purification pill thing, usually carry a few of those fruit juice in foil pouches.