Use AMDRO Mole, Vole and Gopher Blockers when planting to prevent damage from burrowing pests like moles, voles, gophers, and more. Safe and easy to use, the blockers are made of flexible, stainless steel mesh that surrounds the root zone to block animal pests without harming them. The 5 Gal. size is great for everything from ornamental shrubs to small fruit and nut trees (also available in 1 Gal. size).