What Can Stop a Creature That Can Be Tenacious Enough to Chew Through Lead? While the need for exclusion is uncontested in the industry, there are still some discrepancies as to which tools are suitable for the job. Occasionally, some experts will offer caulk, mortar or spray foam as inexpensive, easy-to-use exclusion tools. Unfortunately, these products often provide little to no protection against creatures whose teeth can gnaw through concrete. Steel wool is also popular in the exclusion discussion and while usually a better option than caulk and foam, steel wool requires regular replacement because it can rust and decompose over time. Copper mesh is another exclusion material sometimes recommended. This material is likely to deter a rodent, but the sheer amount of it required to fill a small hole can make it a very expensive solution, plus it’s a softer metal without sharp edges so it can be difficult to create a tight seal which means the mesh can easily become loose over … [Read more...] about What Is The Best Approach To Rodent Control?