Leather boots should be cleaned with a cloth and warm water, then use leatehr conditioner on the insides where they touch the saddle, and proper shoe polish on the rest. If you're talking about proper shiny long boots. For anything else refer to the manufacturer. Saddle soap isn't much use for much - poor cleanser (and always rinse off), wrong ph for leather, and as for conditioning, it actually simply attracts water which is what makes leather sticky, so it attracts dust.