In this case it is first an exclusive access for forklift robot that despite a preliminary mechanical cleaning with brushes, continued to convey dirt, dust and debris inside the production of multilayer cardboard packaging . The anti-dust mat allowed, within the very first 3 meters, “thin and fine” dirt holding still remaining on the wheels of the truck and that was not otherwise withheld from the “brush area” placed before the access to the production line The dirt remains fixed on the carpet without being moved to the passing of trolleys later. The second is an access dedicated to various kind of electric trucks for a length of 4 meters: this allow to retain the dirty that otherwise would have left around the line of the robot trucks.