7.  A tablet according to claim  1  wherein the enzyme has 15  an optimum enzyme activity in the pH range from about 5  to about 11.  10.  A tablet according to claim  9  wherein the enzyme is  an a-amylase derived from  Bacillus licheniformis.  9.  A tablet according to claim  7  wherein the enzyme is  selected from proteases. a-amylases and mixtures thereof.  8.  A tablet according to claim  7  wherein the enzyme has  an optimum enzyme activity in the pH range of from about  7 to about 10.  15.  A method for cleaning dishwashers and washing  machines, said method comprising placing a tablet accord- ing to claim  1  in the interior of the machine and running a  high or a low temperature wash program, in the absence of  a dishwashing load.  *  *  *  *  *  14.  A method of manufacturing a tablet according to claim  1  comprising the steps of preagglomerating the non-ionic  surfactant and sodium sulfate surfactant carrier, admixing  the limescale remover acid and detergency enzyme and  compacting the mixture in a tablet press.  13.  A tablet according to claim  12  wherein the said  surfactant carrier has a weight average particulate size of  less than about 20 µm.  12.  A tablet according to claim  1  wherein the tablet  comprises from about 10% to about 50%, by weight of the  tablet, of said sodium sulfate surfactant carrier.  11.  A tablet according to claim  1  wherein the tablet further  comprises at least one additional component selected from  the group consisting of builders, aesthetic agents, polymeric  dispersants, disrupting agents, binders, shine improvement  agents,  residuality improvement agents and mixtures  thereof.  6.  A tablet according to claim  5  wherein the non-ionic  surfactant is present in a level of from about 4% to about  15% by weight of the tablet.  5.  A tablet according to claim  4  wherein the non-ionic  surfactant is present in a level of from about 2% to about  18%, by weight of the tablet.  4.  A tablet according to claim  1  wherein the non-ionic  surfactant is selected from the group consisting of: poly  ( oxyalkylated) alcohols, end-capped poly( oxyalkylated)  alcohols, alkylene oxide condensates with propylene glycol  or alkylene diamine adducts, and mixtures thereof.  3.  A tablet according to claim  1  wherein the average  particle size of the limescale remover is from about 100  µm  to about 500 µm.  7  US 7,153,817 B2  8 