I knew that the cats jumped up on to the worktops when we weren’t in the room, so I used it to test our new video monitor before DD was born. Took nearly a week to catch one, but as soon as he jumped up, I yelled ‘GET DOWN!’ via the intercom button. It took me a little while to get to the kitchen because I was too busy falling about laughing and he’d long scarpered through the cat flap by then. 
Sadly, I can’t offer this as a permanent solution, it didn’t take long before he was at it again. I wipe my surfaces down, as suggested by everyone else!