The client intended first of all to protect general access to the high quality watchmaking mechanics laboratory as well as the mechanical processing, washing and drying areas of the precious components. After using the small adhesive tear-off mats, he evaluated the possibility of installing a washable and replaceable decontaminating mat that covered a larger area (2.5×2m) widening the cleaning area of the shoe soles to the advantage of general cleaning of the rooms concerned. Then, in the area used for more mechanical work, two adjoining rooms, opted for two ESD floor mats (dissipative) in natural rubber as a working base for the operators. Carpets resistant to chemical agents and therefore easy to clean, even to the advantage of an aesthetic appearance in line with the nature of the objects treated.