Dr Johnson's Antiseptic Disinfectant, Kills 99.9% Bacteria Set of 12 ORIGINAL 500ML Large Bottle EXP 08/23 Dr Johnson's Disinfectant is safe, gentle and antiseptic making it perfect for family use. It can be utilitised for a variety of topical and hard surface applications around the home to help kill 99.9% of bacteria. It can also be used for skin cleansing and applying to minor upsets and accidents.