Rabbits are a real pain. I used to think that they were so cute, hopping along...that is until they chewed down my blueberry bushes a couple of times. And we have a fence around our yard and a dog who will kill the rabbits if she catches them. After the first time we put a little garden fence around the blueberry plants and after the second time we put deer netting around the whole thing, but the deer neeting gets caught in the trimmer. Now we have special rabbit proof fence, which is smaller wire at the bottom and more spread out wire at the top of the fence. It's probably 2 feet tall and allows us access to weed it and doesn't get caught in the trimmer. It's not too practical for something like hostas that you want to be able to see, however, but works well for a garden, just in case someone is having problems with that.
Maybe if you try one of the topical things and keep reapplying if it rains, they'll just go somewhere else after awhile and you won't have to keep applying the stuff. What a bother!