Abstract: A lavatory cleansing block is formed of a composition comprising a mixture of (A) a surface active component comprising one or more anionic surface active agents and (B) a halogen release agent component consisting of (i) a halogen release agent selected from N-chloro-succinimide, calcium hypochlorite, chloramine T, dichlorodimethylhydantoin and bromochlorodimethylhydantoin, and, optionally, (ii) another halogen release agent, in which the halogen release component forms from 10 to 65% by weight of the composition, halogen release component (i) forms not less than 5% by weight of the composite and halogen release component (ii), when present, forms not more than 30% by weight of the block.

Abstract: A free-standing lavatory cleansing block for immersion in the cistern of a lavatory comprises a shaped body (1) formed of a slow-dissolving cleaning composition containing at least one surface active agent and a tablet (2) comprising a bleaching agent embedded in or adhered to the shaped body.