M.O.
Don't have anything sure fire, but do have two suggestions. Heard that some critters don't like marigolds, so we put them along the boarder of our herb & tomato garden last year and didn't have many visitors until the tomatoes were ripe and falling off the branches in late summer. (BTW - the marigolds dry out at the end of the summer, if you pull the heads off you can "reseed" your boarder in the Spring. Just ensure they are dry and stored in a container all winter. They take root very easily. We dig a "trench", drop the seeds, cover them with mushroom compost and water lightly. You'll see sprouts very soon. So buy a flat this year, and you'll have your own seeds forever.)
Also, have heard that many animals don't like "soaker hoses" because they think it's a snake. We had that down last year, all summer too and it really seemed to help. We left it down and would only hook it up with an extention to the spiggot. We could leave the hoses on in the early am or at dinnertime. Also, the soakers are nice because if you want to get a rain barrel, you can simply hook up the soaker to your barrel's spiggot and get a good watering.