Hello Everyone! I'm new here and a new chicken owner. Loving my 2 week old chicks! We are looking for a pre made chicken run of good size and I came across some made by "Omlet". They are large and made of steel. What I was hoping I could get feedback on is the size of the steel mesh. It is 1" X 2 1/2". Is that small enough to keep out raccoons and possums?