A terrfic item that is handy, clever & actually works [SEP] This is my second purchase and I can't say enough about how simple & effective this gizmo is at getting little food particles my toothbrush misses. It's more fun than flossing and works just as well.<br /><br />No batteries or electricity. I fill it up with a combination of mouthwash and water and am amazed at how efficiently it works. It's so good that I keep the second one at work for when I get back from lunch.<br /><br />My biggest suggestion though is to buy one for the kids. They will love using this little &#34;toy&#34; before realizing that it's doing something good for them. And filling it with plain old water will do just fine, too.