Unfortunately there is no source of distilled water when backpacking in the wilderness, and if a filter clogs, it will certainly happen in the middle of a trip!

I tried the Sawyer Squeeze and had a lot o trouble with it clogging. I may go back to using a Katadyn replacement filter with my homemade gravity filter setup. I never had a problem with that.
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May your trails be crooked, winding, lonesome, dangerous, leading to the most amazing view--E. Abbey