It had been three days since the old one bit the dust. I have become very reliant on a Waterpik for dental hygiene, especially since I really don't know how to hold string floss. I must clean the very, varied spaces between my teeth. Old, Dr. Poulious in Newport, NH in the 1960's decided to yank out a number of fine teeth due to overcrowding. I always thought that situation might be a good counter argument when people said I had a big mouth.
At the Walmart in Queensborough today, I found a similar model to my last one. I wanted to at least look inside my former model to see why it had given up the ghost. These things are sealed with "no customer maintenance required". We live in a throw-away society, and although I don't know the exact purchase date, the old one must have been at least five or six years old. Guess they're worth a buck a month.
I plugged it and and gave 'er a try. My old Waterpik must have been losing pressure for years as this one nearly straightened my crooked teeth.