We live on the island of Colebra off the coast of Puerto Rico. There are wild iguanas on the island. For the last couple of weeks, when we have gone outside in the morning, we've been greeted by a large pile of iguana poop on our front porch. What can we do to discourage this iguana from doing this? It seems like it might be a territorial thing. Any help would be appreciated. We don't want to harm this fellow, only get him to modify his behavior. Any suggestions would be appreciated!