303® Marine Multi-Purpose Cleaner

Purchased the 303 fabric/vinyl cleaner because didn't want any conflicts between product brands, wanted to clean before reproofing with 303 fabric guard. used this to remove soiling that had been on the sunbrella canvas for many years, applied to stains then put in washing machine on cold to ensure washed and rinsed not sure supposed to use washing machine but this worked for me. the soiling was erased. applied the 303 fabric guard (separate purchase) to finish the water proofing. happy with the results so much that used the cleaner to wash a Tilley hat and reproofed with 303 fabric guard.

Use witb one oc those magic sponges and this really is the business. My TVR interior looks almost as it did when new 15 years ago.

Great boat cover cleaning product at a reasonable price. Quick delivery.

Worked on ash embedded into spa cover. I ordered this because regular cleaners weren't able to remove the wildfire ash that was hot enough to melt into the vinyl. This did a remarkable job and the cover looks good again after following up with the protective spray. Recommend for tough jobs like mine.

If you need a great boat cleaner inside and out or patio furniture cleaner this is IT. Works amazingly well. We have used this product for more than 20 years! Our 97 boat looked like new when we sold it for almost what we paid.

This is the best product I have found to my pontoon boat seats clean and supple

This stuff is THE magical unicorn of all purpose cleaners. I've read that Optimum Power Clean is also a great alternative, but I haven't used it yet. Beware that if you use it to clean your auto interior you will be absolutely disgusted by the amount of dirt and grime it will remove, even if you thought it was already clean. If your car is a "new to you" used vehicle that has never been professionally detailed (like $200+ detail, not just a coating of amour all that you think is a clean interior) you will be surprised to discover your interior's actual color after using this. I love that this stuff is not scented. It will remove any dirt/residue that is causing your car to smell (even if you don't think it has a smell, other people probably do, you just are used to it) and make it completely neutral, versus other products that you think are cleaning and just masking odors with stronger scents. This stuff is extremely concentrated. I would highly advise purchasing an empty spray bottle container with it. I have used it both 1:1 out of the container to clean one seat, and 20:1 (water:product) on a driver and passenger seat with years of grime. Needless to say, both applications performed identically. So there is absolutely no reason not to reduce it and make it last much longer, it works just as well. Some tips, part of the effectiveness of this and other professional all purpose cleaners is in the way you use it. For non-porous surfaces, it works well to spray it directly and let it sit, avoiding direct wetting of electronic components. You can use a soft brush to swipe lightly over the surface, but it is key to keep the area you are cleaning moist and not dry out. Let the product do the work and dwell on the area for a couple minutes, then wipe away with clean microfiber towel. For cloth surfaces like pillars and headliners you should spray the product onto a clean microfiber and wipe the surface, folding it to clean sections of the towel as it transfers dirt onto the towel. This way you don't over wet the fabric and damage the adhesive underneath. Areas on your headliner around the doors, the visor, and on the pillars around the door that are prone to getting dirty over years of skin oils and other dirt will literally look new again after even just a few wipes. Another product that you should get along with this is the 303 surface protectant. After cleaning with this, that stuff is one of the best things you can use to protect your plastic and vinyl interior. It leaves a nice unscented and matte finish that has uv protection on your interior.

Purchased this product to clean mold/mildew from our lounge covers on the patio. An amazing product. Sprayed the covers with water, applied the product, and scrubbed with a brush. It did a great job of cleaning the covers. Made a believer out of me.