Product review (2 stars): Cleaning these is a real pain!
Thought this would be a great and environmentally friendly way to keep from having to purchase disposable filters that need replacement every couple of months.  However, cleaning these things is a PAIN.  Either vinegar and water, or even MURIATIC ACID in a bag to soak out the gunk.  Even after all of that, the pores in the filter still seemed full of gunk, but if you try to poke them clean with something  like a Q-tip or toothpick, the filter starts to fall apart.

A great idea that falls way short due to how awful it is to clean these things.  We will not be buying them again.