Product review (1 stars): Clogs too fast
Our water isn't very hard (3), but we still have a water softener. Using the hard water, the wick clogs up in about a week. With the soft water it lasts about 2 weeks. Adding the expensive water treatment you can buy separately buys you maybe 3 more days. Once the wick clogs, it's pretty much done. I've tried manually cleaning them out, soaking them in vinegar, all sorts of things, but once it's been clogged once, it clogs again within a couple hours and these wicks are not cheap.