There are a few things you can do to clean fly lines before they need to be used again.

  1. Soak the line in a pot of cold water for a few minutes. This will help remove any built-up oil or grease on the line.
  2. Use a wire brush to clean the inside of the reel housing and other areas that may have been touched by the line.
  3. Use a vacuum cleaner to suck up any excess water and dirt from around the fly lines.