Science Homework Help?

In my science cl my teacher wants us to do a poster on any element. It has to be colorful and have the atomic m, symbol, facts on the element, etc. We also have to have a slogan (i.e. for arsenic: got a stubborn rat? use arsenic instead of a mean old cat!). I was given chlorine, and I already have all of the facts and such, I just can't think of a slogan. Does anyone have any ideas? It has to be positive, so no do you have someone you need to get rid of quickly? type of stuff. And it doesn't have to rhyme, as long as it's catchy. I'd appreciate any help, thanks!