Patent ID: 8075699

Claim:
A method of cleaning and/or disinfecting, comprising: (a) obtaining at least one soluble paper-roll core; (b) placing the core into a plumbing fixture; and (c) wetting the plumbing fixture; wherein the core comprises: (i) at least one soluble paper-roll core that comprises a rapidly-dissolving water-soluble support material and is a hollow support core around which a paper-roll may be wound; (ii) at least one cleanser comprising a surfactant, a soap, and/or a detergent for cleaning the plumbing fixture; (iii) at least one gas-releaser comprising at least one acid and at least one base, the gas-releaser for releasing gas into at least one quantity of water contained in the plumbing fixture; and (iv) optionally, at least one disinfectant; (v) wherein the at least one soluble paper-roll core comprises the at least one cleanser and the at least one gas-releaser that are released into the water when the at least one paper-roll core dissolves.