Blockettes are perfumed p-Dichlorobenzene blocks which are used in toilets and urinals to suppress malodours and freshen the air. Blockettes slowly release their perfumed vapours into the air, replacing unpleasant odours. Blockettes are more than 99% active p-Dichlorobenzene, as compared with some toilet deodorant blocks on the market, based on actives other than p-Dichlorobenzene, which contain less than 5% active ingredient. Blockettes possess a tutti frutti fragrance. The Blockettes in this pack size are 30 mm in diameter, with a depth of 23 mm and a mass of 25g.