Physically cleaning printheads on a epson 6400 printer

I should have worded the problem differently. I have already done all of the cleaning procedures that the printer can do. I am sure the ink has dried up since the printer sat awhile I am sure. I am asking what ingredients make up print head cleaner, I really dont want to spend money online if I can make it myself. I have cleaned epsons before using a syringe, alcohol and air to clean out the small holes in the print heads. I am just asking if there is a better way to physically clean them. thanks.