How do you get the tons of white "leather" on seats and engine hatch clean? Interior cleaner takes most, but I'm left with two things.

1. The occasional long dark mark, probably from a previous owner's guests with non-white soles on their shoes.
2. Also, very small marks on large areas, thousands of them, seems to come from boat standing outside in my damp weather country.

Miracle products? Or just old school advice on these two?

Thanks

If a vinyl cleaner or mild degreaser (simple green) doesn’t do it then try a magic eraser with a cleaner. Just remember the magic easer is an abrasive and actually removing material so don’t scrub hard on just one spot or you will see an overly clean spot.

Dollar store.... get a yellow liquid called "awesome" its awesome....

I second that, Awesome is great, I tried Bio Clean which makes great products, and compared the two, no comparison Awesome was twice as good for cleaning the seats, hull etc. And way less money. I could buy 20 bottles of Awesome for one of the other. It also does a great job on tree sap.

Magic Erasers but some people say they can damage the stitching so be careful.

The LA Awesome stuff @ Dollar Stores works great on a LOT of stuff.
I dilute and use it to clean my siding and eave troughs.
Full strength is pretty harsh, takes the paint off.

I found using a scrub brush that is actually made for upholstery makes a big difference. The bristles are very fine and just the right stiffness so they actually get into the grain and clean it without damage. The non specific brushes I tried before had larger diameter bristles that didn't get into the fine grain.

If awesome and a magic eraser used together doesn't take it off then its there to stay. I've cleaned quite a few with this combination and it works great.

I like Murphys Oil Soap for cleaning upholstery. Safe and effective.

Padraig

Once a big sweaty guy in a red T-shirt stained my seat really bad. Nothing would clean it, even magic erasers, but over time the sun bleached it clean! The boats stays garaged when not in use too.