Abstract: A solid water-soluble cake comprising: from 20% to 90% sodium alkyl sulfate (AS)/sodium alkyl benzene sulfonate (LAS), co-surfactant having a 1:1.5 to 1.5:1 ratio and from 0.5% to 25% by weight magnesium chloride. One key advantage is that the cakes of this invention have a more constant dissolution rate over a wider range of water temperatures than comparable cakes made without the MgCl.sub.2. The cakes are used in automatic toilet bowl cleanser dispensers.

Abstract: A dispenser for cleaning and maintaining the cleanliness of a toilet bowl of a flush toilet is provided to co-dispense doses of two or more chemical solutions in response to the change in water level in the toilet tank reservoir during a flush cycle. The dispenser is to have an operational life based on an approximately predetermined number of flush cycles and includes a first internal reservoir containing a quantity of soluble solid-state first chemical sufficient to provide a saturated dose of first chemical cleaning solution in response to each flush cycle throughout the operational life of the dispenser to thereby maintain bowl cleanliness.