How can I get rid of voles? There are many holes around my shed and tunnels on the thick grass radiate out to the property line and golf course. In previous years we have used peppermint oil, cayenne pepper, castor oil and mouse traps to name a few. The other day I discovered that most of the roots on my perennial hibiscus were eaten off and the plant almost popped up out of the ground! This winter there are more holes than ever! Any suggestions? We live in Ontario, Can. 50 miles northeast of Detroit. Thank you
I don't have a good idea for the size of our vole population, but here are some useful references:
In a home environment (like my own home), I would focus on two things:
1. Reduce the vole population with snap traps. They are easy to trap, but use the "old-fashioned" snap traps with some power in the spring... voles often are larger than house mice.
2. Work on habitat modification (discussed in references) to reduce "harborage" for voles. Don't let the voles have a place safe from predators.
Hope this helps.