transitions area SAS are rooms next to the farm where farmers can disinfect themselves. It is mandatory by law in France, farmers must disinfect themselves before entering and leaving the facility. They must wash their hands and wear appropriate clothing so as not to contaminate, especially their shoes. For this reason, a wash basin, small locker and hanger are included inside (each to his liking); A tray with the appropriate product to disinfect the soles of the shoes is placed on the floor. The SAS is placed immediately next to the entrance door to the facility, so it has two doors (entrance and exit).