Have stubborn rust stains in your toilet bowl? If you live in an older apartment then chances are you do. As much as we try to stay green with our cleaning products, sometimes it seems like you have to go harsh to tackle a major stain like rust. But we just read on the queen of clean that Tang sprinkled around the bowl and left for an hour or two will do the trick. And it's non toxic.Apparently the Tang works because of the citric acid that oxidizes the rust stain. So anything powdery (for the grit) that contains citric acid will do it, even lemon flavored kool aid. What a relief to not have to bust out the harsh chemicals. An added bonus is that we don't have to worry if someone leaves the lid up and our kitty goes in for a drink that she'll be ingesting harmful chemicals. And finally it'll leave your bathroom with that fresh tang scent!