Let it Mellow

My hubby and I were at a fancy restaurant a while back and there was this sign in the restroom that talked about the water savings when you use dual flush toilet, I can't remember what it was but it was high, I want to say 60%. So because, we just installed a dual flush toilet in out new bathroom I mention it to my husband and we start figuring out how often people go small flush v. big flush, etc. So, yes, it is a big savings. Then my husband says, "imagine the savings when you let it mellow." It was pretty funny.