Affordable & Effective, But Has Pooped Out [SEP] I had major dental work (extractions, jawbone surgery, grafting, dry socket, infection, implants) and needed something to help keep the area clean and emptied-out, given that my tissue didn't bond properly to the implants, thus allowing food in.<br /><br />The unit has generally worked well for me and I like a lot about it, including how long it would go between charges.<br /><br />Things I don't like:<br /><br />1.  It seems impossible not to taint the cleanliness of the water reservoir when opening its little door.  I suggest filling the reservoir with hypochlorous acid (nature's germ killer) and letting the hypochlorous disinfect the door.<br />2.  It is too easy to accidentally turn the unit off when using it, based on the location of the on/off button.<br />3.  I wish the unit would default to the last-used power setting, but I have had to reset it each time.<br />4.  My unit's battery appears to be failing.  The unit will charge appropriately, but then only run for seconds.  If I turn it back on, it will run another few seconds, then the process repeats.  As far as I know, the unit can't be opened to replace the batteries, but correct me if I'm wrong.