Have you ever had a really considerate guest who went the extra mile to clean up, but actually ended up doing damage by cleaning things they weren't supposed to? We just had someone run some items through the dishwasher that were not dishwasher safe. Not a huge deal as our replacement cost is probably all of $8, but this is a guest who will be back. I need to find a way to say "please don't do that again" while expressing appreciation that they clean up so thoroughly. Or I guess I could just not say anything and replace the items each time!