Vacuum the couch with a soft brush attachment
Wipe the surface with a dry microfiber cloth
Mix a small amount of mild soap with distilled water
Dampen a microfiber cloth with the solution
Wipe the leather gently in sections
Wipe again with a clean damp cloth
Dry immediately with a soft towel
Apply a leather conditioner after cleaning
Test any cleaner on a hidden spot first
Avoid soaking the leather
Avoid harsh chemicals, bleach, and ammonia
Avoid abrasive scrubbers
Clean spills as soon as possible