The present invention relates to detergents and rinse agents for machine dishwashing and to supply forms which combine detergent and rinse agent containing certain polymers in a single product comprising at least one polymer with cationic monomer units and at least one anionic polymer modified with phosphorus- and/or sulfur-containing groups, characterized in that the pH value of a 1% by weight solution of the anionic polymer in distilled water at 20.degree. C. is less than pH 6.