It was only last year, my third year with an open raised garden, that something discovered the bounty within. Racoons maybe, it seemed to be overnight. Until late last summer I didn't have to worry about anything, but I am sure they are now looking forward to this summer and making plans, and will probably be starting even earlier.
My local farmer had told me that the only thing that works for him is playing an AM radio talk station all night, it scares them all away. Works better than scarecrows or barbed wire he says.
I am ready to go to war...what works for you?