AMAZING
I drink tea every day.  If anyone else drinks tea they know that your coffee cups get stained very easily and are hard to clean.  I had three years of tea residue caked onto my yeti cup, I had scrubbed, and scrubbed, and scrubbed, and put it in the dishwasher ect.  I put one of these tablets inside with hot water and let it sit... BOOM looks like new.  They work AMAZING!!
Rating: 5 stars