What is Dettol All In One Disinfectant Spray? This amazingly versatile spray can be used on all hard surfaces (such as toilets, bins and sinks), soft surfaces (such as sofas and mattresses), and leaves a fresh fragrance in the air. It helps protect your family from illness by killing 99.9% of bacteria around the home, including E.coli and Salmonella as well as cold & flu viruses. How to use Dettol All In One Disinfectant Spray? Shake can well. Hold can 15-20cm from pre-cleaned surface and spray surface until covered with mist. Do not saturate fabric when using on Soft Surfaces. Allow to air dry. No need to wipe. Surfaces may vary in quality. ... Do not use on polished wood, painted surfaces or acrylic plastics.