 But he could tell me anything. He could say, yeah, it is. Well, it's very easy. Find out what product he's using and go look up the product online and read about it. But you're saying really it's probably not worth it. I don't know that it's totally necessary. Unless the chimneys are leaking, I probably wouldn't do it. Okay. Thank you very much. All right. Good luck with that project. Thanks so much for calling us at 888-MONEYPIT.