Kris, You didn’t say what fabric the top is made of, but most probably it is Sunbrella. If it is Sunbrella, use 1 cup bleach and ¼ cup mild soap in 1 gallon of water. For more detailed instructions, go to the Sunbrella website: http://www.sunbrella.com/cleaning/marine-tops-covers.php Even if your top is not Sunbrella, but vinyl, the same mixture should work. I have seen miracles happen in cleaning Sunbrella. We have a customer who has a yellow Sunbrella pilothouse cushion that looked awful and wanted to replace it. After using the above mixture, the cushion looks like new. I talked myself out of a job!!! Good Luck, Steve Schrimsher ********************************** Schrimsher Yacht Canvas Stuart, FL Phone: 772-334-9989 Email: steve@schrimsher.com www.schrimsher.com <http://www.schrimsher.com/> M/V Salty Turtle MTOA 3029 >We have a gray bimini top on our trawler which is docked in Palm City, FL. SNIP