Aside from personal cleanliness, Prabhupada said a brahmana should always leave a place cleaner than he found it. He should clean up after himself, and not be afraid to clean up after others. He certainly shouldn’t leave his mess for others to clean up. Sometimes we have seen devotees who think like this: “I’m a book distributor, let the less important dishwashers wash my plate.” We should all clean.
Lectures from a disciple Vol 1, Pg 351, 4th paragraph.