立つ鳥跡を濁さず
1
it is simply common courtesy to clean up after yourself;a bird does not foul the nest it is about to leave;on leaving a place, one should see that all is in good order
See also:
跡を濁す (あとをにごす)
Other forms
立つ鳥あとを濁さず 【たつとりあとをにごさず】 · 立つ鳥後を濁さず 【たつとりあとをにごさず】 (word containing irregular kanji usage) · 発つ鳥あとを濁さず 【たつとりあとをにごさず】 (search-only kanji form) · 発つ鳥後を濁さず 【たつとりあとをにごさず】 (search-only kanji form) · 発つ鳥跡を濁さず 【たつとりあとをにごさず】 (search-only kanji form)