 You have that problem or don't know what I'm talking about? Well, we got the man who can take care of it and can also explain it, Jim Parker. He's with Awesome. And, Jim, it's awesome that you're back with us. Welcome. Good morning, Gary. How are you? I'm doing fine, doing fine. Fantastic. So tell everybody a little bit, I guess, what biofilm is, and then we'll get how it gets in our homes or trapped in different appliances and things.