There is a home remedy spray to keep rabbits from munching on your plants, but it works as a nibbling deterrent more than a general repellent. Blend 3 eggs, a cup of skim milk and a quart of water. It must be reapplied after rain. To repel rabbits and squirrels, try whirligigs or wood-tappers or predator urine or human hair. Each of these will lose its effectiveness within a couple of months, so you've got to alternate your methods.