Sanitizer chemicals should always be used according to the sanitizer label instructions. Option C is correct.
It is important to constantly apply disinfectant chemicals in accordance with the label's directions. This will guarantee their safe and efficient use. Combining sanitizer chemicals with other materials, like cleansers or hot water, might release toxic fumes or lessen the sanitizer's efficacy.
So, Handling sanitizing chemicals, especially extremely concentrated solutions, should only be done by authorized individuals.
Therefore, Option C is correct.