Can you offer any tips to get rid of voles? They've infested my garden last year, but while at first I managed to get rid of them with a repellent, this year they're already come back and it doesn't work. The nasty rodents haven't done much damage to plant roots last summer, but I'm afraid they won't be so nice this time, and besides - their tunnels are ruining my grass. I've heard that you can keep garden rodent-free easy when you have a cat or a dog, but it's an allotment (aka community) garden, so I can't really keep a pet there.