Gotta agree with that. With the wide variety of products available that are specifically meant to be used as filler, why on earth would you want to use something that's not meant to be used as a filler? It's like saying hey... did you know that you can make a pretty good substitute for toothpaste if you mix some baking soda, salt, water and a little mint together for flavor? Well, I guess that would make sort of a passable substitute for toothpaste... but why wouldn't you just use toothpaste as toothpaste???