1. The attachments are held in place with an O-ring which lost its grip after 2 months.2. The unit doesn't build up enough pressure to clean.WaterPiks kept failing every 2 years, so I tried this and it is much worse. Save your money.

This water pick has 1/3 the spray force of a Water Pick brand model 72. Be careful not to put warm water in the resevoir of this Conair. The piston will seize and the unit will be done for.

I thought I'd give this a try despite some of the negative reviews. I was disappointed with this product. It doesn't have enough power, is rather noisy and makes a lot more mess than I expected. Knowing it's a water pik, I expected there to be water spillage, but this was just too much. I had to clean the mirror, the sink and the floor when I was done. I didn't feel like my teeth were any cleaner after using this tool. I've since packed it away.

this is an excellent machine compared to waterpik. I wear braces, so I know what is working and what is not working. this machine works great!

This is a worthless product. It makes a lot of noise, but it doesn't do anything. Most of the time I cannot get the water to come out and the heads are easy to come off. Save your money!

Yes, it's true. I'm blue.This is a POS. Do not buy. Stay away from all blue receptacle waterpik's that cost below 50.You'll regret it. My last waterpik was Hydrafloss. It lasted two years. I went with el cheapo thinking it would do much the same thing for my teeth.WRONG! It's all cheap plastic. So the water can't get up through the hose due to--poor design. If you do get it to work for a day or so, I commend you.But be warned, if all you hear is motor and there is no water coming up to irrigate your teeth, do what I did; smash it into a thousand pieces and take it back to customer service at Walmart.No you won't get your money back, but the look on their faces is worth the 30 for crap I paid for!