Or, you could do what we did quite by accident; get yourself a half-feral calico cat. Sophie is our "everything" deterrent; and I really do hate that because we don't have a garden this year to worry about. I love all the little cute chipmunks, squirrels, cardinals, finches, wrens, but not the moles. She doesn't discriminate, though, if they appear on her territory, they are history.