I have found that a streak free soft pencil erasers is great on removing marks and dirt from my leather handbags. All of my bags are soft Nappa or Italian leather. I have not tried it on a stiffer leather bag but it does wonders on my soft leather handbags. A few gentle strokes and the marks come right off. I always use Foohy Pink Pet erasers. I just thought I should share my leather maintenance secret. I have attached a pic of the erasers that I use.