Of course the rats had to go. And I guess rats are somewhat harder to get rid of from your roof than a possum. A possum you just wait to leave and then fix up the hole where they are getting in. But who knows what you do with rats? We had mice once and trapped them with humane traps. If you consider displacing a mouse from its home humane. Which, considering the alternatives, I guess I do. So I wish I could help you resolve your feelings with this mate, but I think they're probably just going to have to remain mixed.