Easy solutions are limited.

When I got my terrier I tried to terrier-proof the fence by stapling fine mesh to the bottom of the fence and digging that into the ground under the fence. The un-intended consequence of this is I have a rabbit proof yard. You'll have to use a 1" square mesh or smaller - rabbits will go right thru a cyclone fence.

The other options jumping to mind either involve getting a dog or are , I assume, less than legal in your area (even if they are tasty options).

Oh yeah, rabbits will eat hot peppers with no problem.