Patent ID: 8647567

Claim:
A method for introducing a substantially uniform concentration of an antimicrobial sanitizing functional agent into a flowing stream of water, the method comprising: providing a shaped composition comprising: a) a cylindrically shaped dissolvable region including an antimicrobial sanitizing functional agent, the dissolvable region having an exterior surface area including a top surface, a bottom surface, and a peripheral surface: and b) a non-dissolvable region disposed adjacent to the dissolvable region; the functional agent being selected from the group consisting of a hypochlorite, a peroxide, a quaternary ammonium compound, a silver salt, an N-halogen compound, an antimicrobial organic acid, and combinations thereof; and contacting a flowing stream of water with the top surface of the cylindrically shaped dissolvable region to introduce the functional agent into the flowing stream of water, contact between the flowing stream of water and the top surface of the cylindrically shaped dissolvable region introducing the antimicrobial sanitizing functional agent into the flowing stream of water at a substantially constant concentration over a life of the shaped composition.