The growing technological innovation in the production of semi-finished products in carbon fiber and other composite materials has prompted the customer to find a solution to minimize contamination in cleanrooms due to the uncontrolled access of both trucks and staff. The solution was offered by the installation of washable contamination control mats both in pedestrian and semi-finished wheeled product accesses. By means of the washable contamination control mats, the customer was able to realize larger areas (up to 12 square meters in size) than those made with the peel-off mats, which were in fact ineffective.