Wendy............the pavers in my estimation will be fine. Mainly because if it heavy to me it heavy to an animal. All but a bear anyway. I don't think they can pickup a paver, and if they're put together properly they won't slide. But if you use the wire and pavers, no way can anything get in there. The pavers I'm looking at are reclaimed granite pavers. They are heavy and shaped like a key hole. But I like the wire idea a lot.