MARTYN F. CHILLMAID / SCIENCE PHOTO LIBRARY MARTYN F. CHILLMAID / SCIENCE PHOTO LIBRARY
Editorial use only.
The current (2017) formula uses the active chemical sodium hydroxide and the revised UN Globally Harmonized System of Classification and Labelling of Chemicals (GHS) label indicates that this chemical is corrosive to eyes and skin (GHS05). This domestic chemical is used to clear blocked sinks of fat and food deposits that build up in the U bend. It should be as safe as possible in use as well as affective - often a compromise.
Model release not required. Property release not required.