Originally Posted By hikerduane
I read elsewhere today/last night, if the filter is allowed to dry out from the previous season, folks were having issues the first time out this year.
Duane


I'll repeat from another ongoing thread the Sawyer filters seem to auto-clog over winter, despite backflushing and drying before storage.

I suspect they never completely dry (the openings are tiny and even after weeks in a sunny spot, water can still be shaken out) so bacteria and whatnot are growing in the interim. Could be the bleach rinse needs more bleach but whatever the cause, I now backflush at home before first use of the season. Saves a lot of campsite fuss.

Cheers,
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--Rick