During this time of heightened awareness of disease transmission, many are finding themselves revisiting their cleaning and disinfecting procedures.  The internet and various organizations are full of advice as to what to use to clean and disinfect our persons, homes, businesses and laboratories.  While many products are often effective for use; they are not always particularly safe.  Strong volatile chemicals (such as acids, alcohols, ketones etc.) can produce noxious and irritating fumes or burns.  In some cases common household or laboratory cleaners and agents can become dangerous and lethal if combined.  Bleach or sodium hypochlorite solutions are very dangerous when mixed with most common chemicals.  Our infographic highlights some of the most dangerous combinations of household and laboratory cleaners.