Works excellent and does exactly what it is supposed to do, you put the temperature of the water you want in and the water tank size is perfect for the job
First waterpik ever, so really nothing to compare it to other than the one in the dentist's office--thus the one star less than perfect.
Took me a few tries to get used to the 'drainage' but now managing not to soak my shirt.
For the most part I enjoy the sensation of cleanliness in my mouth--quite different from flossing and brushing.
Only small problem, other than drainage, was forgetting the switch on the waterpik itself when I first tried to use it---just out of the box I knew it was not the waterpik but me missing something---and of course I looked not at he waterpik hanging from my mouth, but the component on the counter. Had to laugh at myself.
Well, I'm not a good reviewer; I may tell you that I use your machine every night - just before going to bed. I think it works fine - just a bit noisy, and noise is rather unpleasant; I think I would have liked it better if it sounded differently (not like an old diesel engine; by the way my previous car was Golf TDI, and it sounded great :-). Apart of that many thanks; I rather enjoy my WP-100