Hi there, does ISO 22000 require cleaning chemicals to be food grade? I cannot find the reference for this requirement. I work for a warehouse where food (finished goods) are stored and we have McDonald`s, RBI and ISO 22000 standards and cannot find a reference that required cleaning chemicals to be food grade. So, is that means we do not require to use food grade chemicals for cleaning? Note that there is not manufacturing process, it is just storage. Thank you, Tiago