Lol!!!! I totally did!!!! I did it maybe three/four times to my city. So, I am afraid that I may have actually harmed my handles in the process, but that was due to an extra step that I added in; I steamed the handles of my bag over a pot of boiling water before cornstarching them because I thought that it would better draw out the oils without drying the handles out and I think I might have toasted them in the process. But, anyways, I did one handle before I did the other, and I definitely saw a difference after several times. It's not the lilac work "schazaam" but the handles are definitely cleaner. And this is after I tried apple guarde on the handles too (but maybe I'm not using the AG quite right), heh. But the cornstarch definitely didn't harm the bag at all, other than leaving a mess that I cleaned up later.