TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Bacteria Containing Composition: The non-caustic drain opening active also comprises en enzyme in an amount of 0.1-10 (especially 0.1-5)wt% of the composition and the bacteria is present in an amount of 0.1-20 (especially 1-10)wt% of the composition. The composition achieves an initial foam volume of at least 250 ml without mechanical generation of foam and the foaming surfactant is present in an amount of 0.5-10 wt% of the compoosition. The foaming surfactant is an anionic surfactant selected from sodium lauryl sulfate, alkyl aryl sulfonic acid, and/or alkali/alklaine earth metal salts of alkyl aryl sulfonic acid.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Bacteria Containing Composition: The alkali carbonate is present in an amount of 7-90 wt%, and the acid in an amount of 2-70 wt% of the composition. The alkali carbonate is Na2CO3, K2CO3 and/or NaHCO3, especially a mixture of 18-28 wt% Na2CO3 and 5 wt% of NaHCO3 and the acid is selected from citric, fumaric, adipic, maleic, oxalic, lactic, or sulfamic acids, sodium citrate, sodium sulfite, sodium bisulfite and portassium citrate. Preferred Reducing Agent containing Composition: The reducing agent is present in an amount of 5-75 (especially 15-65) wt% of the composition and is selected from reducing sugar, sodium bisulfite, sodium borohydride, hydrazine salt, sodium hypophosphite and aluminum hydride. The foaming surfactant, alklai metal carbonate and acid are as described above. Alternatively the reducing agent comprises sodium thiosulfate, thiourea, calcium thioglycolate and sodium thioglycolate. The composition achieves an intial foam volume of at least 250 ml withiut mechanical generation of foam. The carrier comprises before combination with water: (i) a mixture of 10-35wt% of Na2CO3 and NaHCO3; (ii) 1-5 wt% citric acid; and (iii) 1-5 wt% of foaming surfactant Preferred Peroxygen Containing Composition: The peroxygen compound is present in an amount of 5-75 (especially 15-65)wt% of the composition and is selected from sodium perborate, sodium percarbonate peroxyhydrate, potassium peroxymonosulfate and sodium percarbonate. The foaming surfactant, alklai metal carbonate and acid and the initial foam volume are as described above. EXAMPLE - A composition was prepared comprising (wt%): CDB-63 (RTM) (sodium dichloroisocyanurate) (45), citric acid (19.5), fine granular Na2CO3 (27.5), anhydrous dense grade sodium dodecylbenzene sulfonate (Naconol 40-G (RTM)) (3) and NaHCO3 (5). The composition was found to be very effective in removing major proportion of hair in hair dissolution test.