i had a possum on the back deck this evening eating the cats food. i'm worried it will be by the coop although i don't think he can get past the fence let alone inside. i went out side and chased it off the deck and it ran into the covered grill then went off the deck and out to the field. is there something i can put out to try and keep it away, cat food is now inside and will only be out when the cat is eating.any thoughts? thanks jim