Pikapot Electric Dispensing Pot Cleaner and Descaler, 8 Packets with an original multi-cloth.

Had to used 3 packs, did remove rust spots but did not remove the pink deposits on inner boiler.

I put off cleaning my Japanese hot water boiler for too long. The other available cleaning products were so expensive I just put it off, for years... then it was not pumping and making noises. I found this cleaner at half the cost and it worked so well. I have my lovely water boiler working like new again. I was worried after I ordered that there would be no English instructions as the package was in Japanese. But there were great instructions. Great product. Shipped very fast.