Biofilm is a sessile microbial community on a living or inert surface. On dairy farms, biofilms inevitably form on wet equipment surfaces. There are two types, the positive biofilm consisting of flora of technological interest such as lactic acid bacteria that play an important role in preventing the adhesion of pathogenic microorganisms and the negative biofilm which consists of floraflora and pathogenic flora. The negative biofilm can detach from the equipment and contaminate the raw milk, causing alteration of its organoleptic quality and can be the cause of serious diseases