Machine dishwashing compositions containing cationic bleaching agents and water-soluble polymers incorporating cationic groups

A method of removing bleachable-stains from dishware in a machine dishwashing process, the method comprising:

• a) providing a detergent composition comprising a bleach system having at least one cationic group and a polymer having at least one monomer unit having a cationic charge over a portion of the pH range 2-11, said polymer having properties for reducing spotting and filming on glassware or glass care enhancing properties, or both;
• b) providing dishware in a machine dishwasher, said dishware including articles stained with bleachable stains;
• and
• c) contacting said dishware with said detergent composition in a machine dishwashing process;
• wherein said composition provides tea stain removal performance that is better than the performance of an otherwise identical composition that has a non-cationic group containing bleach substituted for the cationic group containing bleach.