Accumulation of rubbish, trash, refuse, junk and other abandoned materials, metals, lumber or other things.
This is the Maumelle City Code - 38.2 (2)
When asked what needed to be changed to bring my yard into compliance I was never given an exhaustive list. Nor was accumulation defined (or a definition of abandoned).
Would (should) that law be considered void for vagueness? For instance - I have children who play in the yard and leave their toys in the yard. There is nothing abandoned about their toys as they're playing with them on a near-daily basis.