Deer Ban repellent capsules discourage deer from eating ornamentals and other landscape plants. Deer Ban uses a unique gel-tablet application to provide effective year-round protection from wildlife damage. Other repellents attempt to make your plants smell or taste bad and eventually, the deer simply become acclimated and ignore it. And the other repellents smell so bad that they repel you from your yard. Each Deer Ban capsule contains predator (coyote) urine that triggers the animal flight response.