The act or process of reducing micro organisms to safe levels as judged by public health agencies; a substance that limits or controls micro organisms when used according to manufacturers instructions [..]

Sanitising is an important step in the cleaning process. Sanitising is done after washing and involves the destruction of disease-causing microorganisms or reducing their numbers to a safe level.

(v) make sanitary by cleaning or sterilizing(v) make less offensive or more acceptable by removing objectionable features

To reduce the number of bacterial contaminant to safe levels as judged by public health requirements. To make clean and free or inactivation of dirt, filth, and conditions injurious to health. General [..]

from=non-Oxford British spelling|sanitize|lang=en