Unfortunately, cache contents deteriorate over time. A new well-stocked cache can very soon degenerate into one with rather poor contents. As John said, though, what's tat to one person may not be to another.
As cache owner you're quite free to remove any obvious tat, and restock the cache. And you just have to live with the fact that the same thing will probably happen all over again...!
I rarely trade, and haven't done for a long time now, so the contents don't really interest me. It is disappointing, though, when I take my fourteen-year-old grand-nephew caching and there's nothing in the box of any interest to him, especially when it's a long walk to just one cache.
Do not go gentle into that good night.
Rage, rage against the dying of the light. (Dylan Thomas)