Should be a quick find, but maybe not... You are looking for a micro of rectangular shape. Not really caustic, the original hider, rubisco42, had labels so he used them. Maybe to deter muggles? I don't know, be not afraid. (There is a geocaching sticker on it.)
No climbing needed. Reachable when standing on pavement. Vines are an issue in summertime.
Adopted by BevanQ from Rubisco42 in March 2010. I've revised the difficulty rating based on past DNFs and added a hint. (On Jan. 2, 2012 I revised the difficulty rating up again, based on more DNFs.)