Review title is BZZZZZZZZZZZZZ!!!!!!!! Requires maintenance. [SEP] I really like being able to have my teeth this clean when I'm on the road, camping, etc.... It seems to work really well......when it works.<br />I have been through three of these. I like them enough to purchase another, but, have some complaints about their durability.<br /><br />My first two units refused to operate after about 3 months.  After the second one decided to stop working; I decided to take it apart..... What I found was pretty gross.......... Cr^p was growing inside and seemed to be........ well......it was not an attractive habitat inside the toothbrush.....not for me anyway....<br /><br />With my most recent battery operated toothbrush, I have decided to remove the brush head (right word?)and shake all the water out every time I use it. This one has been going strong, with every day use for over 6 months!<br /><br />It would be nice if the manufacturer gave instructions as to how to prolong the life of your purchase... but then again, they probably wouldn't make as many sales.<br /><br />They have sold me three in the course of a year.