I was reading my Popular Science last night when I saw the Perfect Flush device from Brondell in their "What's New" section. They have this type of device all over Europe and Asia where you press one button for "number 1" and you get a tiny flush. Then you press a different button for "number 2" and you get a regular flush. Most of the toilets in the U.S. only have a single handle; which is the same technology we've been living with since the advent of indoor plumbing. Why are we so slow to adopt conservation technologies?
I know the mantra of water conservationists is: "If it's yellow, let it mellow" But let's be honest, when you have a few bathrooms all over the house and you like to distribute your time spent "going number 1" in all of them, you might sometimes let something mellow a little too long, and it just gets unpleasant. (Sorry for the yucky details, but hey, we're all grown ups here)
Therefore, the mellowing principle really works best in a frat house, where it always smells like leftover cheap beer anyway (I know this from experience).
What makes the Perfect Flush so....eh hem...perfect is that it can be used on any existing toilet! Why use a "number 2" flush when you only need a little bit of water to remove the yellow? It's very common sensical. The whole concept of just one single handle always seemed extremely wasteful to me. The product is due out in May of 2009 and an MSRP at $119, which seems to be fairly reasonable if you account for the water saved over the lifetime of the product.
Video of Perfect Flush demo. *** If you are an an immature male and giggle when you see a bidet demonstration you will probably want to stop the video half way through.