This looks like a great filter, for a great price, although it does not filter out viruses. Is this a big problem?
http://sawyer.com/products/sawyer-mini-filter/
http://sawyer.com/products/sawyer-mini-filter/
The Sawyer filter removes bacteria. It does not remove viruses. Leaving for a short period in sunlight will not provide enough UV to destroy the viruses.If I'm wrong please correct me, but I heard that you should leave your filtered water in a CLEAR bottle out in sunlight for a few hours as the UV kills the bacteria and viruses