Carl Seville is a big proponent of duct sealing, as we see in this segment where Carl introduces Michael Anschel to Aeroseal. The product is a non-toxic latex spray that lets users seal ducts from the inside.

About the series:

Michael Anschel, CEO of Verified Green, and Carl Seville, principal at SK Collaborative, are the Green Police. In this series they scour the exhibit floor at the 2014 Greenbuild International Conference and Expo on the hunt for products you can truly call "green." Watch the duo’s antics while hearing their assessments of noteworthy products.