After fighting deer, rabbits, elk, cows and moles, voles and squirrels, I have found that shaving Irish Spring soap into a spray bottle and spraying my plants works as well as anything. So frustrating to have your plants eaten and it usually happens when they are partiularly lovely. You know, in the morning you comment on how beautifully the roses are doing and when you get home from work, there is not a single bloom left! Grrr. Now the squirrels have dug up all my bulbs!