In the "hardest product to clean" post, I mentioned the FSQSP...I make iced tea in it almost daily, and the "sludge" from the tea makes the fins all slimy and gross. Unless I scrub each individual fin with a toothbrush, I can't get it clean enough. I won't put it in my dishwasher, cuz even though it's supposed to be DW safe, I have melted too many of them that way. (Yes, I only washed it on the top rack...my DW water must get way too hot.) Any tips?