A formulation comprising a multiplicity of solid cleaning particles and a multiplicity of dosing particles, wherein said dosing particles comprise core-shell particles comprising at least one host material and at least one releasable material, wherein said host material comprises, as the shell of the dosing particles, at least one partially or completely water soluble polymeric material and said at least one releasable material comprises the core material of the dosing particles, comprising: at least one post-cleaning agent; and optionally at least one cleaning agent; and optionally at least one other treatment additive; for the treatment of a substrate, wherein said solid cleaning particles are polymeric and/or non-polymeric cleaning particles, wherein said polymeric solid cleaning particles have an average density in the range of 0.5-2.5 g/cm 3 and an average volume in the range of 5-275 mm 3, and wherein said post-cleaning agent comprises at least one dye transfer inhibiting agent: wherein said host material is selected from at least one of polyvinyl alcohol, copolymers of poly(vinyl alcohol) and poly(vinyl acetate), poly(ethyl vinyl alcohol), hydroxypropylmethylcellulose, cellulose, starch, hydroxypropylcellulose, hydroxyethylcellulose, carboxymethyl cellulose, poly(vinyl pyrrolidinone), poly(ethylene glycol) and gelatin, or salts thereof; and, said dye transfer inhibiting agent is selected from chitosan, and crosslinked polyvinylpyrrolidone polymers; and wherein said non-polymeric cleaning particles comprise glass, silica, stone, wood, metals or ceramic materials and wherein said non-polymeric solid cleaning particles have an average density in the range of 3.5-12.0 g/cm 3 and an average volume in the range of 5-275 mm 3. at least one post-cleaning agent; and optionally at least one cleaning agent; and optionally at least one other treatment additive; for the treatment of a substrate, wherein said solid cleaning particles are polymeric and/or non-polymeric cleaning particles, wherein said polymeric solid cleaning particles have an average density in the range of 0.5-2.5 g/cm 3 and an average volume in the range of 5-275 mm 3, and wherein said post-cleaning agent comprises at least one dye transfer inhibiting agent: wherein said host material is selected from at least one of polyvinyl alcohol, copolymers of poly(vinyl alcohol) and poly(vinyl acetate), poly(ethyl vinyl alcohol), hydroxypropylmethylcellulose, cellulose, starch, hydroxypropylcellulose, hydroxyethylcellulose, carboxymethyl cellulose, poly(vinyl pyrrolidinone), poly(ethylene glycol) and gelatin, or salts thereof; and, said dye transfer inhibiting agent is selected from chitosan, and crosslinked polyvinylpyrrolidone polymers; and wherein said non-polymeric cleaning particles comprise glass, silica, stone, wood, metals or ceramic materials and wherein said non-polymeric solid cleaning particles have an average density in the range of 3.5-12.0 g/cm 3 and an average volume in the range of 5-275 mm 3. wherein said host material is selected from at least one of polyvinyl alcohol, copolymers of poly(vinyl alcohol) and poly(vinyl acetate), poly(ethyl vinyl alcohol), hydroxypropylmethylcellulose, cellulose, starch, hydroxypropylcellulose, hydroxyethylcellulose, carboxymethyl cellulose, poly(vinyl pyrrolidinone), poly(ethylene glycol) and gelatin, or salts thereof; and, said dye transfer inhibiting agent is selected from chitosan, and crosslinked polyvinylpyrrolidone polymers; and wherein said non-polymeric cleaning particles comprise glass, silica, stone, wood, metals or ceramic materials and wherein said non-polymeric solid cleaning particles have an average density in the range of 3.5-12.0 g/cm 3 and an average volume in the range of 5-275 mm 3.