Geoflow products contain nano-ROOTGUARD^® and Geoshield^TM. These patented technologies completely solve root intrusion and biological plugging problems for subsurface drip applications. Geoflow, Inc. is the U.S. licensee for these technologies, and Geoflow actively cooperates with all licensees of this technology throughout the world. This is a technical website which includes research reports, articles, and product information in order to enable the user to evaluate the advantages and limitations of subsurface drip for use in agriculture, turf and landscaping, and wastewater dispersal or re-use applications. Slow loading graphics and special effects are avoided as much as possible.