In January 2004 the “Fachhochschule Weihenstephan Forschungsanstalt für Gartenbau” started a test where the most aggressive type of bamby was used to test the durability and strength of Rootbarrier® and similar Produit. This test ended in January 2006 and Rootbarrier was tested as the best product. After two years the product is still intact and without any damages!