I just had to tell you how wonderful it is that I can now rinse my mouth with cold water! I haven’t been able to do that for at least 20 years. It was quite by accident when I was preoccupied with something else and forgot to turn on the hot water as I usually do. In the dead of winter I threw a mouthful of cold, cold water in to rinse – which would have caused me to jump 10 feet before – and nothing. Just water. OMG! Great! – SH in TX