Self-adhesive lavatory treatment compositions

A self-adhesive lavatory treatment composition which comprises:

• up to 50% wt. of an adhesion promoter constituent based on a fatty alcohol polyglycol ether as may be represented by the following structural formula (I):
• R—OCH2—CH2—OHn (I)
• within which,
• R is an C12-C24 aliphatic mono- or poly-alkene moiety and which includes at least one unsaturation in the moiety, and
• n has a value of from 1 to 50;
• 1-25% wt. of an organic solvent constituent, which is liquid at room temperature (20° C.);
• at least 25% wt. of water;
• 0.5-25% wt of a detersive cationic surfactant constituent according to structure (a) and/or structure (b):
• in which:
• R is C8-C22 alkyl;
• R1, R2, R3 and R4 are independently selected from the group consisting of:
• H, and the further group,
• in which R13 is C8-C22 alkyl with the proviso that R1, R2, R3 and R4 are not all H;
• and X is a halogen,
• in which:
• R is C8-C22 alkyl;
• R5, R6, R7, R8, R9, R10 and R11 are independently selected from the group consisting of:
• H, and the further group,
• in which R13 is C8-C22 alkyl, with the proviso that R5, R6, R7, R8, R9, R10 and R11 are not all H;
• and X is a halogen;
• optionally a co-adhesion promoter constituent;
• wherein in use, the said self-adhesive lavatory treatment compositions may be applied and adhered to a dry or wetted ceramic surface, especially the interior sidewall in a toilet bowl or other lavatory appliance, and wherein the said self-adhesive lavatory treatment compositions is retained adhered to the said surface following a plurality of flushes of water impinging upon the adhered self-adhesive lavatory treatment compositions.