Pkg. of 25. Discourage deer, elk, and rabbits from browsing trees, shrubs and flowers. These powerful 3 1/4" garlic capsules are made with a concentrated garlic oil that has proven to be 85%-90% effective for up to 6-8 months. Safe and economical, the garlic is activated by puncturing a barrier to release the garlic, then the units are attached to a plant or fence with a clip on the side for easy attachment. Use 1-4 clips per shrub depending on the browse history or create a barrier around individual plants where the animals are coming in from. Units with an unbroken barrier have an indefinite shelf life. The green color blends in with lawn and garden plants.