A shopper said, "I would have purchased years ago. OMG, the stuff that floods out from between my teeth is astounding." Another declared, "This device is a miracle. Flossing my teeth with braces ...

This particular cordless Waterpik has nearly 63,000 Amazon reviews from satisfied shoppers. During the October Prime Day event, it's only $59.99, or 40% off its normal price. The Waterpik is a ...