How to stop sims from using the bathroom counters, or any other room counters to cook, when there are plenty of empty ones in the kitchen? Sometimes they prefer to go up two flights of stairs to the ...
This is a bit more complicated but try using the '[' to make something functional (a toilet, sink, bed, etc) smaller and use bb.moveobjects to put it into the counter top, so you can't see it. Then they won't use the counter top.