Originally Posted by S1rst

Other than whats been suggested, theres not really much you can do. Well, legally anyway. You cant go clamping them as that would be illegal for sure.

A notice in the chinky is the best idea. It may take a while but would certainly get better im sure, although they'll always be some that still do it, or dont see the sign, or just couldnt give a toss.

I think it will always happen no matter what you do though, and its just something that youve gotta accept unfortunatly. Yes you can have a go at them, write on their windows etc, but its only going to be a matter of time before the shit hits the fan.