also, in reading this chart, it seems strange that salt and asprin seem to have the same "health rating". ...also the fact that the msds for asprin says "harmful if swallowed" is kind of amusing....and (aside from it being bad for plumming), who would be afraid to use draino (lye)? i'm not sure how useful these "health ratings" are. deknow ****************************************************** * Full guidelines for BEE-L posting are at: * * http://www.honeybeeworld.com/bee-l/guidelines.htm * ******************************************************