Does anyone have a good memo for getting employees to clean their office kitchens?

I have been assigned in my office to create a memo and a schedule to go out to my staff members for cleaning the office kitchen.|||You Clean, or We Close.|||The one we used for years was printed in LARGE letters:





PLEASE CLEAN UP AFTER YOURSELF. YOUR MOTHER DOES NOT WORK HERE.





It worked for most of them; there are always some that will not pull their own weight or even throw an empty styrofoam coffee cup away. Those people you can do nothing about. If they are slobs at work, they are undoubtedly slobs at home.|||If all is well with the owner... indicate that until this problem gets rectified, and all can attain their adulthood, the kitchen will be closed...|||Clean and tidy all the Delph or it may be harmful to your Health!