Hard surface disinfectant: One 5 g effervescent tablet will make 1l in-use solution of 30 ppm chlorine-dioxide. Due to the compact nature of the tablet, it is easily transported and mixed on site/at the scene. Use mop, cloth, spray bottle or brush to apply. No need to haul bulky bottles about, simply mix with water when needed. Stored in a cool dry place the tablets should have an indefinite shelf life. Ideal for caravaners, remote clinics, camps and barracks kitchens.