Abstract: In a liquid delivery device for a toilet, a container (3) for the liquid has an outlet (15) which extends into a cup (35). The cup (35) is open to the atmosphere and liquid flows into the cup (35) until the mouth (25) of the outlet is covered by liquid in the cup. The cup wall has a weir (45) and liquid in the cup (35) overflows the weir (45). A collar (61) around the outside of the cup (35) forms a capillary with the cup wall to control the flow of liquid and feed it to capillary channels on a delivery plate (9) below the level of the weir.

Abstract: A liquid dispensing device for use in the flush cistern of a water closet comprises a reservoir (13) for the liquid formulation which is fed from an inverted container (5) maintaining a constant liquid level (47) in the reservoir (13) at the mouth (37) of the container. A displacement body in the form of a piston (9), which may be magnetic, moves in a bore (56) to dispense liquid through opening (25). The piston (9) is moved by a float (11) which moves up and down as the level of water L in the cistern rises and falls on flushing. The float is coupled to the piston (9) magnetically. In another embodiment a direct mechanical coupling is used. Liquid seeps past piston (9) when in the lowered position, and is raised to overflow outlet (25) when the cistern fills. In another embodiment, liquid is dispensed on a downward stroke of the piston. The fit of piston (9) in the bore allows liquid to seep slowly past the piston to replenish the bore.

Abstract: A dispenser for releasing a treatment composition into the bowl of a toilet, and a fragrance into the surrounding room, comprises a solid block of a treatment composition in a housing. A block of gel material impregnated with the fragrance fills an opening in a front wall of the housing and is exposed to the housing interior.

Abstract: A dispenser (1) for releasing a liquid treatment composition (33) into a toilet bowl and a fragrance into the surrounding room comprises a container (3) holding a non-perfumed liquid treatment composition (33) for treating flush water in the toilet bowl and a fragrance releasing gel block (39) for continuously fragrancing the surrounding air.

Abstract: A lavatory cleansing block has two parts co-extruded together, the first part containing a chlorine releasing bleach and the second part containing component such as a perfume or colorant which need not be bleach resistant. Migration of components is avoided if there is no common hydrophobe in the two parts. The perceived performance of the perfume is enhanced by its juxtaposition with the bleach.

Abstract: A lavatory cleansing block has two parts co-extruded together, the first part containing a chlorine releasing bleach and the second part containing component such as a perfume or colorant which need not be bleach resistant. Migration of components is avoided if there is no common hydrophobe in the two parts. The perceived performance of the perfume is enhanced by its juxtaposition with the bleach.

Abstract: A cleansing block for treating water comprises from 40% to 80% by weight of a halogen release agent, from 20 to 55% by weight of a surfactant component, and from 1 to 10% by weight of a hydrophobe.

Abstract: A solid lavatory cleansing composition comprises: (i) a halogen-release agent containing at least 30 mole % of active halogen; (ii) a substantially non-oxidizable, substantially anhydrous surfactant component; and (iii) a substantially non-oxidizable solubility retardant agent.

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 lavatory cleansing block is formed of a mixture comprising:(a) from 5 to 85% by weight of one or more anionic surface active agents;(b) from 2 to 50% by weight of one or more solubility control agents having a solubility in water less than that of the anionic surface active agent(s); and(c) from 0.5 to 50% by weight of one or more water-soluble salts of polyvalent metals.

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.

Abstract: A process for the preparation of a lavatory cleansing tablet for immersion in the cistern of a lavatory comprises forming a free-flowing particulate mixture consisting essentially of:(a) from 5 to 90% by weight of a surface active component comprising one or more organic surface active agents, especially anionic or nonionic surface active agents;(b) from 0.

Abstract: A lavatory cleansing block comprises a solid carrier base which is a mixture of two or more non-ionic surface active agents, one of which is relatively insoluble in water and the other of which is relatively soluble in water and preferably also contains one or more of (i) perfuming agents, (ii) coloring constituents, (iii) germicides, (iv) builders or fillers and (v) water-softening agents.