No, they aren't going to make new toothbrushes out of them! Eww.

Buy Preserve toothbrushes, then send them back with the case using the postage paid label you can print out from the Preserve site, and the toothbrushes will be recycled into plastic lumber for boarwalks, decks, etc.

Found the kiddie version in Whole Foods. They lurved them! And Mommy loves that they can be sent back and recycled into other stuff. Dope!