Water disintegrable, foam producing article for use as a toilet bowl cleaner

A method of cleaning soil from a toilet bowl containing water, the method comprising the steps of:

• 1) adding an active agent-containing a water disintegrable, particle containing foam producing pouch article comprising:
• i) a soluble fibrous structure comprising one or more filaments, wherein the soluble fibrous structure encases;
• ii) a particulate effervescent cleaning composition, wherein the particulate effervescent foaming composition comprises:
• a) a particulate foaming surfactant selected from the group consisting of linear C11-C12 alkylbenzene sulfonate, sodium C12-C16 alkyl methyl taurate, sodium alkyl sulfate, C12-C18 alpha olefin sulfonate, disodium lauroyl or cocoyl glutamate, sulfonated C12-C16 alky polyglucoside, lauryl sulfosuccinate, C12-C16 dimethyl amine oxide, lauramido propyl betaine, cocamido propyl betaine, lauramido propyl hydroxyl sultaine, cocamido propyl hydroxyl sultaine, and mixtures thereof;
• b) an effervescent agent selected from the group consisting of sodium bicarbonate, sodium carbonate, and mixtures thereof
• c) an effervescent activator selected from the group consisting of citric acid, tartaric acid, sulfamic acid, sulfuric acid on silica carrier, and mixtures thereof;
• d) an effervescent protecting agent selected from the group consisting of silica, zeolite, and mixtures thereof;
• and
• e) an active agent selected from the group consisting of perfumes, soil release polymers, enzymes, bacterial spores, chelants, antimicrobial compounds, bleaches, and mixtures thereof;
• to the water within the toilet bowl;
• wherein the fibrous structure exhibits a basis weight of greater than 10 g/m2 to about 5000 g/m2;
• wherein the water disintegrable, particle containing foam producing pouch article exhibits a dry density of less than water;
• 2) allowing the water to rapidly disintegrate the article to produce a particle containing foam while the article floats on the water within the toilet bowl;
• 3) allowing particles of the effervescent foaming composition to deposit on walls of the toilet bowl surface above the water line of the toilet bowl;
• wherein
• A) the particle containing foam producing pouch article exhibits an undissolved particle residue height of at least 1 cm, as measured by the foam height method described herein;
• B) the undissolved particle residue height of at least 1 cm persists for about 1 hour;
• and
• C) the particle containing foam particulate residue deposited on the walls of the toilet bowl comprises particles of unreacted or partially reacted particulate foaming surfactant previously suspended in the foam.