The cleaning products used differ depending on the type of soil
and surface to clean. Basically, three cleaning processes are used:
neutral cleaning (generic cleaning, which uses neutral detergents),
acid cleaning (used to remove inorganic matter, where acid deter-gents with descaling or deoxidizing characteristics are used) and
alkaline cleaning (used to removewaste of organic origin, including
fats, where are used chlorinated detergents due to their degreasing
nature) (Amorim, 2006;ARESP, 2006;Rodgers, 2011)