These work with cats too! With Remus I use the "Or don't" quite a bit!

"Stop scratching the couch....or don't"
"Stop harassing the plants...or don't"

You get the idea lol.

Another one that REALLY gets his attention is "Spray the kitty!" Usually if Remus is being Naw-tee I just have to Mention that Im getting up to get the squirt bottle and he knocks off his naw-tee behaviors!