this thing is pretty good for dirt
https://www.amazon.com/Brush-Cleaning-Nubuck-Jackets-Leather/dp/B0BDPHQP2G/ref=asc\_df\_B0BDPHQP2G/?tag=hyprod-20&linkCode=df0&hvadid=632166188114&hvpos=&hvnetw=g&hvrand=9027932757741957314&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9031239&hvtargid=pla-1883061171998&psc=1