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Methods for introducing a substantially uniform concentration of a functional agent into a flowing stream of water using a shaped composition. The composition may be shaped and sized to be inserted into a device configured to be attached over the end of a faucet. The shaped composition comprises a d

Methods for introducing a substantially uniform concentration of a functional agent into a flowing stream of water using a shaped composition. The composition may be shaped and sized to be inserted into a device configured to be attached over the end of a faucet. The shaped composition comprises a dissolvable region including a functional agent (e.g., an anti-microbial sanitizing agent). A non-dissolvable region disposed adjacent to the dissolvable region may optionally be provided. The substantially non-dissolvable region remains substantially intact as the dissolving region is progressively dissolved, introducing the functional agent into a flowing stream of water.

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1. 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 funct

1. 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; andcontacting 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. 2. The method as recited in claim 1, wherein the shaped composition is retained within a faucet mountable device, the faucet mountable device being mounted to a faucet that provides the flowing stream of water. 3. The method as recited in claim 2, wherein the shaped composition is positioned within the flowing stream of water in order to introduce the functional agent into the flowing stream of water, the method further comprising moving a portion of the faucet mountable device that retains the shaped composition out of the flowing stream of water while the faucet mountable device remains mounted to the faucet to allow the stream of water to then flow out the faucet without contacting the shaped composition, so that the flowing stream of water does not include a functional agent introduced therein. 4. The method as recited in claim 1, wherein the functional agent comprises a hypochlorite, the method further comprising: positioning an object to be sanitized into the flowing stream of water including the hypochlorite functional agent introduced therein; andsetting the object aside for a period of time sufficient for the hypochlorite to be effective in sanitizing the object. 5. The method as recited in claim 4, wherein the period of time is less than about 1 minute. 6. The method as recited in claim 4, wherein the period of time is between about 10 seconds and about 1 minute. 7. The method as recited in claim 1, wherein the functional agent comprises a hypochlorite, and an average hypochlorite concentration introduced into the flowing stream of water is maintained between about 25 ppm and about 200 ppm over the life of the shaped composition. 8. The method as recited in claim 1, wherein the functional agent comprises a hypochlorite, and an average hypochlorite concentration introduced into the flowing stream of water is maintained between about 25 ppm and about 100 ppm over the life of the shaped composition. 9. The method as recited in claim 1, wherein the functional agent comprises a hypochlorite, and an average hypochlorite concentration introduced into the flowing stream of water is maintained between about 25 ppm and about 75 ppm over the life of the shaped composition. 10. The method as recited in claim 1, wherein any variability within a delivered concentration of the functional agent over the life of the shaped composition is not more than ± about 50%. 11. The method as recited in claim 1, wherein any variability within a delivered concentration of the functional agent over the life of the shaped composition is not more than ± about 30%. 12. The method as recited in claim 1, wherein any variability within a delivered concentration of the functional agent over the life of the shaped composition is not more than ± about 20%. 13. The method as recited in claim 1, wherein the functional agent comprises a hypochlorite, and any variability within a delivered concentration of the hypochlorite functional agent over the life of the shaped composition is not more than ± about 20%, and a minimum concentration of the hypochlorite functional agent delivered at any point during the life of the shaped composition is at least about 50 ppm. 14. The method as recited in claim 1, wherein the dissolvable region of the shaped composition comprises a cylinder and a ratio of a diameter to height of the shaped composition is at least 1. 15. The method as recited in claim 1, wherein the dissolvable region of the shaped composition comprises a cylinder and a ratio of a diameter to height of the shaped composition is at least about 2. 16. The method as recited in claim 1, wherein the dissolvable region of the shaped composition comprises a cylinder and a ratio of a diameter to height of the shaped composition is at least about 4. 17. A method for introducing a substantially uniform concentration of an antimicrobial sanitizing hypochlorite functional agent into a flowing stream of water, the method comprising: providing a shaped composition comprising: a) a cylindrical dissolvable region including a hypochlorite salt selected from the group consisting of calcium hypochlorite, magnesium hypochlorite and mixtures thereof, the cylindrical 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; andcontacting a flowing stream of water with the top surface of the dissolvable region to introduce the hypochlorite into the flowing stream of water, a concentration of hypochlorite introduced into the flowing stream of water being maintained at a substantially constant concentration between about 25 ppm and about 200 ppm over the life of the shaped composition. 18. The method as recited in claim 17, the method further comprising: positioning an object to be sanitized into the flowing stream of water including the hypochlorite introduced therein; andsetting the object aside for a period of time sufficient for the hypochlorite to be effective in sanitizing the object. 19. The method as recited in claim 18, wherein the period of time is less than about 1 minute. 20. The method as recited in claim 18, wherein the period of time is between about 10 seconds and about 1 minute.