human
What are the best ways to clean a leather couch?
assistant
1.  Use a damp cloth or sponge to wipe away dirt and dust.
2.  Use a specialized leather cleaner, which is designed specifically for cleaning leather upholstery.
3.  For tougher stains, use a mixture of equal parts water and mild dish soap and rub gently with a soft-bristled brush.
4.  To remove any residue, use a dry, lint-free cloth or paper towel to blot the area.