Two step method of cleaning, sanitizing, and rinsing a surface

A two-step method of cleaning, sanitizing and rinsing a surface comprising:

• (a) cleaning a surface with a concentrated detergent composition comprising:
• an alkalinity source selected from the group consisting of an alkali metal carbonate, alkali metal hydroxide, alkali metal silicate, alkali metal metasilicate, and combinations thereof;
• from about 0.01-40 wt-% of a phosphinosuccinic acid adduct comprising a phosphinosuccinic acid and mono-, bis- and oligomeric phosphinosuccinic acid adducts having the following formulas
• wherein M is selected from the group consisting of H+, Na+, K+, NH4+, and mixtures thereof, wherein m and n are 0 or an integer, wherein m plus n is greater than 2, and wherein a use solution of the detergent composition has a pH between about 9 and 12.5;
• and
• (b) sanitizing and rinsing the surface with a sanitizing rinse composition comprising:
• a C1-C22 peroxycarboxylic acid;
• a C1-C22 carboxylic acid;
• hydrogen peroxide;
• and at least one nonionic defoaming and at least one nonionic wetting surfactant, wherein the sanitizing rinse composition is a concentrate having less than about 2 wt-% C1-C22 peroxycarboxylic acid, and wherein the sanitizing rinse composition when diluted from about 0.01% weight/volume to about 2% weight/volume provides at least a 5 log reduction in pathogenic organisms at a temperature of at least about 100° F.