I heated my 22 quart stock pot-overkill, I know but it was seriously DIRTY- to a boil. I only filled it about half full, but it seemed to take forever to heat that lake's worth of water! Then I added about 3/4 cup of baking soda. It does fizz, as the blogger mentioned, so be sure to leave enough room at the top of your pot to accommodate this. I put the filter in and boiled it for about 15 minutes, and the filter turned out like-new-clean. I retrieved the filter from the pot with a pair of tongs and rinsed it in tap water so I could touch it more quickly. Then I let it dry on a paper towel overnight. I should mention, it didn't fizz after that first burst when I added the baking soda, but after about 15 minutes of boiling, it started to fizz on its own like pasta beginning to boil over, so be sure to watch your pot, just in case.
Honestly, I didn't expect this method to work, so I didn't take "before" pictures. Turns out, I really should have since it worked beautifully. Here's the "after" picture. Nice and shiny!
Below is the pot after I boiled the filter. YUCK!
Even my husband was impressed! It feels so good to complete a cleaning project successfully, especially with so many unsuccessful attempts under my belt.
Happy Cleaning!