Each Tablet makes up to 10 litres of bleach. Jeyes Defence Sanitising Tablets are effervescent chlorine tablets that provide a safer alternative to liquid bleach. The chlorine tablets produce a powerful sterilising solution suitable for use on washable hard surfaces, drains, sinks, toilets and for a general disinfectant. Can also be used as a vegetable and salad wash. The tablet kills germs including salmonella, E.coli and MRSA.