Poles, Inc. offers a variety of wood preservatives that are considered less toxic, Green Wood Preservatives, which can be used on indoor applications. While Copper Naphthenate solutions are an excellent choice for most applications, they do impart odor and are not registered for indoor applications. Bora-Care, Bora-Care w/Mold-Care, Timbor Professional and Jecta are all DOT (borate) based solutions, which are labeled for use to treat areas such as sill plates, walls, and crawl spaces. They can be applied in and around homes, apartments, restaurants, hotels, schools, and commercial buildings. The solutions are clear and produce very little odor. Borates are well known Termiticide, Insecticide and Fungicides, and they do qualify for LEED credits for Green Building. Please contact Randy at Poles, Inc. with questions about the best DOT based solution for your project. 719-685-0444.