I have not been cursed (or is it blessed?) with moles, voles, or woodchucks (groundhogs) yet. I've spent the last 8 years adding lots of organic compost to my rocky clay builders' soil, and the earthworm population is significantly larger than it was a few years ago. I have squirrels, raccoons, opossums, skunks, snakes and Japanese beetles in my New York City yard, along with lots of songbirds, butterflies, and beneficial insects and spiders. If the worms and beetles attract moles, they will have to compete with the local squirrel population for my few remaining tulip and Dutch iris bulbs, but they are welcome to aerate the flower beds and eat grubs! I have only killed one creature in my yard, a venomous copperhead snake. I have had some luck scaring away squirrels by using 4 solar-powered electronic critter repellers placed around the yard.