I bought the Water Pik several weeks ago and am thrilled with it. I look forward to the wonderful massage I experience every time I use it! I then bought one each for my daughter and son-in-law.
I do not like the fact the unit leaks water if any is left in it. The need to refill each day is ridiculous it seems to me. Perhaps if you used it until it is dry is your answer, but I do not use it until it runs dry.