Cleaning in a dream often reflects emotional processing -- clearing out what no longer serves you, whether that's an old grudge, a habit, or clutter that's become symbolic of something heavier. A satisfying clean can point to genuine letting go, while a mess that keeps returning suggests the underlying issue isn't fully resolved yet.
He that would truly promote Art must insist as much on the confutation of false opinions delivered by others, as in the declaration or truth. - Cardan Girolamo (1501-1576)