Plant ProTec Deer and Rabbit Repellents protects plants from deer browsing and further deer damage using a garlic odor that deer can't stand. Like pepper, garlic is a deer-resistant plant that deer don't like smelling or tasting. Each Plant Pro-Tect clip slides gently onto a plant or garden fence for use. When deer begins chewing on the fence enclosure, the deer repellent clip will release its odor and repel deer, elk, and rabbits. The odorous deer repellent mixture in the clips is made of food-grade organic material. The Plant Pro-Tec clip will last 6-8 months and is perfect for use in trees, vegetable gardens, and flowerbeds. Each pack of deer repellent by Pro-Tec contains 25 clips.