"Do and Don’t" advice for commercial properties:
DO make sure there is a written maintenance plan for cleaners to follow, and that it is understood by all cleaning staff working on the site.
DO have a list of approved chemicals that can be used, with MSDS.
DO have a list of sensitive areas that only trained staff can service.
DO monitor expected chemical usage, and confirm only approved chemicals are on site.
DO check all chemicals for reaction to the surfaces to be cleaned. Do this in an inconspicuous place using minimal product.
DO check labels on all cleaning products and make sure that the chemical is safe for use on your surfaces.
DO identify your tile type correctly before cleaning.
DO NOT use abrasive cleaners such as Jif, Ajax, Gumption etc on polished stone or tile.
DO NOT use acid-based cleaners, or high-strength alkaline cleaners.
It is very important to take special care when using any electrical machinery in wet environments. Use an approved electrical protective device such as a transformer, circuit breaker or residual current device. All electrical equipment should also have current safety test tags if used in commercial situations.