On Tuesday after I cleaned up the bathroom I decided to post a sign for Robert and Reed to see. They are the WORST with leaving toothpaste, water and more all over counter. It has actually worked pretty well! It's Friday now and the counter isn't too bad!
I may start making signs for everything:
"Pick up your underwear from living room"
"Don't leave your wet towel on the floor"
...and many more signs!