I remember a time in my bike shop days when we actually had to destroy old wheels and frames to discourage dumpster divers from wasting our time.
I have to admit though, it was quite amusing to watch the facial expressions of the person who pulled a wheel out of our dumpster, only to find out they could buy an identical brand new wheel for $50, or pay $80 in parts and labor to repair the *free* wheel they just happened to find laying around somwhere....
