I've had a large garter snake move into the garden, and the vole population seems to have scurried off to elsewhere. They girdled my Acer japonica dissectum and ate every single thing under the protective A-frame, even the weeds. I pulled out the maple and potted it to see if it would come back, which it has - yay! - and put a peach tree in it's place. I think I'll change the batteries in the rodent deterrent this fall, wrap the new tree and see if any of it helps.
