The Vaporooter formula destroys roots on contact and inhibits regrowth for years. It contains two herbicides that penetrate root cells to destroy roots on contact, and binds to pipe walls, joints and cracks to inhibit new growth. Computerized application equipment allows operators to jet up the line, push a button and fill the pipe with foam while retrieving the hose. The application system fits any jet truck, and is available as an option from multiple truck manufacturers. 800/841-1444; www.vaporooter.com.