Since the best methods are already ruled out, you can try this:
OMRI Listed Organic Materials Review Institute
safe for use in protecting fruit, vegetables and other food crops.
Contains no synthetic additives, is non-toxic,
and is not harmful to animals or the environment.
Considered the most cost-effective
and environmentally safe animal repellent available.
http://www.plantskydd.com/repellent.html
I have some that I’m going to use this year on a large corn patch outside the deer/rabbit fenced garden.
Now, if I could just find an effective grasshopper deterrent...
Turkeys.
Thanks for the animal repellent. Last summer a racoon was in our little garden so we put out a live trap. We got him. As hubby and friend were about to remove the trap, the racoon reached out and got itself a squash, he ate it as he was being put in the truck to be placed elsewhere.
Free roaming chickens and guinnies.