The tunnel creates an obligatory passage and is equipped with, internal arc-shaped atomizing nozzles that saturates the environment but preventing dispersions. The nebulization system is connected to a control system capable of automatically mixing the hygienist or sanitizing product at the percentages indicated by the manufacturer. Access to the tunnel is regulated by a traffic light with motion detection. By placing a barrier floor inside the Sanitary Gate, it is possible to hygienise or sanitizes the surfaces in contact with the ground.