Just an idea: They say when you have a dog that digs in your yard/garden, you should give him a place to dig in rather than let him dig all over the place or try to "break" him of it. What if you buried meaty bones and stuff in just one small area off to the side of the garden and see if the critters just do their digging there? Oooo and you could move it around and then they would do your digging/cultivating for you!!
Well, the digger critters are after my earthworms which I now have by the thousands. If I buried meaty bones and stuff I would probably attract all the coyotes in the neighborhood.