I have used most of the teak deck cleaner/brighteners on the market and have found them to require huge amonts of elbow grease / effort if the supposedly cleaned deck is to look even a little bit better than it did to start with. I recently tried the Wessex Chemical factors 2 part system and was completely amazed! No hard scrubbing and a finished deck that looked as if it was band new!! The product is not available in many chandlers but can br delivered to your door for less than the cost of many of the other useless products. Tel01202 823699 to order I guarantee you will not be disappointed.