Metal or Concrete Driveway Cattle Grates
It seems clear that these grates act as a strong deer deterrent. However, there have been reports of deer learning to cross other types of deer grates (including ones that use square pipes instead of round ones, others that use reinforced concrete to place a series of cement “waves” across the driveway, and still others made with a mesh of pipes and closely spaced steel beams). Thus, as the saying goes, while these grates will clearly exclude most of the deer all of the time and all of the deer most of the time, there is no absolute guarantee that they will exclude all of the deer all of the time.
