I know we have raccoons in the area... in fact many of them... We have built a 36 x 36 pen with 1x4s on top and buried on the bottom. all enclosed with poultry fencing 6' high. My question is... will raccoons dig under the 1x4s to get into the pen? We also built the coop 12 x 12 with T-111 buried approx 6 inches and all ventilation holes covered with close mesh hardware fencing. Do you thing this will be OK?