For what it's worth, the company that makes Tilley hats (100% cotton duck
fabric) warn against using bleach at any dilution, and those are pretty
tough hats.

It's one thing to say you can rinse the bleach out of a laundry load of
towels - they're soaked in rinse water once or twice. But, I doubt you can
reliably rinse the seams of vinyl seats & boat covers.

"Ron Thornton" wrote in message
...
I have cleaned much mold from vinyl with household bleach cut at least
50% with water. It will not bother synthetic thread, which is usually
dacron, any more than it bothers the vinyl. It will not bother cotton
thread if you rinse well (Hose it). However, I would try the oxyclean
stuff first. It will remove some molds (didn't do squat for my sails)
and seems to be more user friendly that bleach.

Ron