Hoo boy... well, when I was selling boots, I was told that neetfoot oil rots the stitching. Silicone just works back out because it like rubber and never really gets into the leather (ever notice that tires often rise to the surface of old landfills?). A little saddle soap is Ok if used sparingly and rinsed/wiped with a damp cloth. There's really no reason for dry cleaning and it dries the leather. Conditioning keeps leather supple and prevent dry rot, cracking, helps keep it moisture resistant naturally. If it gets wet, just hang it on a good hanger and let it air dry. Nixwax is a good conditioner that helps resist water because it's hydroscopic; you apply it to damp leather and it follows the moisture into the leather. Nuts, huh? Any camping/outdoor supply can tell you more. There are several other good conditioners out there, also of course. Any tach shop should have some. I only use some sparingly, but I use it on my gloves, too.