Dettol Disinfectant Spray kills 99.9%* of germs in 30 seconds. Dettol Disinfectant Spray can help protect your family from illness by helping prevent the spread of harmful bacteria and viruses. Dettol’s unique formula is proven to kill 99.9%* of bacteria and viruses, including E. coli, salmonella and the flu virus, on surfaces that you come into contact with every day, such as door handles, kitchen bins and toilet areas.