Product review (3 stars): I like that I can clean thus filter easily and reuse ...
I live in an apartment and have incredibly hard water. I like that I can clean thus filter easily and reuse it. The old paper ones lasted less than two weeks. This one, with proper care, lasts all winter. I rinse it every few days and totally clean it weekly with a vinegar soak and then dishwashing liquid.
Update- I thought this was working well, but switched back to paper. Paper is much better at wicking the water up. My humidity level is far more comfortable now that I've switched back to paper.