Frillylily - It's really discouraging that you have not been able to get rid of the voles. I do live in the city, and we have always had a few voles around, but nothing like what I'm seeing now. It's like every vole in the area decided to move into my yard. My husband died last fall, and I would like to move, if I can sell my house.
Jill - I'm going to try traps and spraying oil first to try to stem the tide.
Maurice - My gardens are too extensive to deal with the mesh wire. If I only had 25 daylilies, I might try that. Thanks for your input though!