ohhh... haha.... sorry. I thought you meant, more "deep" stuff then all that. I figured everybody knew all that already. Ok, well..how about as far as humans go anyway, one reason could be defiance, becuase they were told not to.
wayne...that powerful green cleaning stuff you get at the dollar store will remove the "sticky" stuff from anything. Hell, let it go anywhere ya want! ok?....just don't let the hiway patrol see ya do'in on the side of the freeway! Texas'l charge ya a grand for messin' on their freeways! oh yeh!