I'm old enough to be on Social Security & have never, never, before written a negative review about anything.This is the second unit I bought where the battery / charger / switch system deteriorated in about 16 months. The unit contains a flexible, bi-shape (one shape on -- one shape off), stamped metal switch that seems to either wear or loose its precise bi-shape memory. The result is that either the switch does not make sufficient contact to deliver sufficient power to the motor, or it always maintains a slight contact that drains & ages the battery. Manually reshaping this "switch" restores proper function for a short time. But, such cold reshaping further deteriorates the metal's shape memory and the same type of failure follows sooner & sooner as additional fixes are applied.

I purchased this product about 6 months ago. It did a decent job at first. Then it had to be recharged more and more often--now it won't hold a recharge for one operation. I just tossed it in the trash.

It lasted about 3 months (gradually got weaker & weaker) before it wouldn't hold a charge at all. I threw it out & got a Panasonic Oral Irrigator which I really like.

Do not waste your money on this hand held flosser. Mine lasted only a year before it died and the pressure from the flosser is almost non existent. You are much better off spending the extra money and getting the platinum counter top model. It is far superior and does a much better job. What a disappointment this product is!

I've had two of these and I'm done. On the first one the power connection oxidized so that it would no longer charge. On the next one the pump gave out. Six months each was my guess at their lifespan. My third will be the Panasonic and we'll see how that works out.Like others say, the battery duration is terrible and charging it is very hit and miss.I'd steer clear of this product.

My first water-pik lasted for a close to 3 years. I ordered second one in February, and noticed they changed the water-pik. I am wondering if this change was a problem.?? I had the second water-pik less then 4 months! Will research other water-piks.