I admit we've got very lax about this and our 10 yr old cat does jump up onto and walk on our kitchen work surfaces. I know - yuck.
We're moving to a new house soon so I was wondering if this would be a good opportunity to set some new house rules... no idea how to deter him though! I remember when he was younger we tried foil and double-sided sticky stuff but not particularly successfully. So I'm looking for new ideas!