Originally Posted by
Mel1959
I have been told by several people in the exterminator/pest control business that the black commercial type rat boxes have baffles inside that are to prevent squirrels from gaining access to the poison. It has to do with the height and the way the body has to bend to maneuver the baffles that is supposed to make it impossible for them to gain entry.
From my own experience I can say that I have never seen a squirrel even remotely interested in the black boxes my neighbor has out around his house. I was very concerned when he had his exterminator company set up multiple boxes around his house and I did pour motor oil at the opening of most of the boxes. The boxes have been in place for years and I have a plethora of squirrels I feed daily. I’ve never found a single squirrel dead in my yard. One of the boxes is on the side of his house between our houses and I have watched squirrels run all over that part of my yard but never shown any interest in that box.