Some of the coolest things found in our (still relatively) new Target Center here in Minneapolis are the dual flush toilets in the rest rooms. (Yes, such things thrill me.) Dual-flush toilets are gaining popularity in residential applications as well. They can cost anywhere from a couple hundred bucks to a couple thousand, so swapping out your old water guzzler to a dual-flush may be cost prohibitive. Especially when, like mine, the old thrones are in working order. You can imagine my delight, then, when I spotting th HydroRighte Drop-in Dual Flush Converter at Amazon for a schmeezily 20 bucks. Although the majority of the reviews are positive, some people do have issues. I'd suggest checking out Mad Max's review (which readers have deemed (the most helpful critical review) to put them all in perspective.