Detergent based formulation, cleans as it fragrances. High perfume content to neutralise odours from urine, tobacco and sweat. PDCB Free. Contains no Paradichlorobenzene. Helps to control limescale. High impact fragrances with odour neutralisers. Water soluble blocks won’t choke outlets. Lasts up to 4 weeks (dependent on urinal turbulence). Alpine Fresh fragrance. 3kg tub.