[cypher]

If the first one is made of coconut fibre it should be ok, the second one looks like some grass balls I have but it doesn't actually say what it's made of so not sure & I don't really see that a ham would do anything with a sisal mouse tbh & you would have to remove the felt bits.
If you want to be totally safe you could easily make your own version of the first one, a bit of cardboard for the base, a cardboard tube fixed with non toxic glue, cover it in sisal string & attach one of the willow balls you can buy from lots of places.