I put Blackrocks on the corners of my Legacy duffles to keep them from losing color. I had put some on my sunflower duffle; then a few days later, I noticed a black mark. It cleaned right off. If I hadn't had the Blackrocks on there, I think I would have gotten a stain.Thank you! I almost got that after reading your posts here about it. So far I just got Leather CPR to test out on a slightly dry bag. I have been hesitating to condition bags since I don't know if they need it or not, but this one does and hopefully it will be good for it.