Certified as an Environmentally Preferable Product by Scientific Certification Systems, MicroPro treated lumber releases 90% to 99% less copper into aquatic and terrestrial environments than standard treated wood products, the company says. In addition, what's released bonds to organic matter and becomes inactive, keeping it from having a toxic effect on the environment, the maker says. The product also takes less energy to create and is more concentrated than standard wood treatments, resulting in less greenhouse gas emissions during the manufacturing and shipping processes. These characteristics helped it win Building Products' Green Product Award this year. 770.233.4200. www.osmosewood.com.