 This is Nate Adams, the Energy Smart Home Performance, and I want to show you a really easy way to see if you've had rodents in your installation. You see these tracks running through here? Those are examples where critters have been crawling on top of the attic insulation. They're crushing things down and generally screwing things up. You're probably pooping and peeing and doing all kinds of things you don't want to know about. If you see a hole like that, that is a critter hole. I've seen a bunch of critter holes here. There's another one right here, and I found out why. It was right in this space. There's that piece of fiberglass. You can see all the edge here is red. It barely gets through it. But look at this nice little space down here. If you were a critter, what better place to just drop down in there and live? That would be the kind of place I would want. It's all warm. It's got insulation on top of it. That's a nice place. Look for signs like this that tracks through the insulation. Various holes anywhere you can find. There's one right over there. You'll have an idea of if you have issues or not. Thanks for watching. This is Nate with Energy Smart Home Performance.