There are a few things you can do to clean a futon:

  1. Remove all the cushions and bedding. This will make it easier to move the futon around and make sure it is clean.
  2. Wipe down the surface with a dry cloth or a paper towel. Make sure to get all of the dirt, dust, and stains off of the surface.
  3. Use a vacuum cleaner to suck up any excess moisture or dirt that may have built up on the surface over time.