STAR BRITEEZ-ON EZ-Off Boat Hull & Bottom Cleaner - Remove Marine Deposits & Scum Line Quickly & Easily

This was my first time purchasing this product. Additionally, along side using this product, this was the first time I cleaned the underside of a boat. Overall, this does an excellent job at getting all the grime off the bottom of a boat. I can't say how this works on a boat that isn't cleaned all summer, because we did some scrubbing while hanging out on the river a few times.So, with this said, this really made the majority of the cleaning very easy. I put this in a pump sprayer (like you would for spraying weeds) and then sprayed it on the boat from top to bottom. I let it sit for probably about 5-10 minutes and then I went at it with a scrub brush. Everything pretty much came off perfectly the first time, aside from all the grime near the motor (this took a few times to get it perfect). As a noobie, it took me about 1.5-2 hours to completely make the boat look brand-new. There wasn't any grime that this couldn't remove.The only warning that I would caution you about is how strong this stuff is. First, I would probably wear long sleeves and pants. I got some of this on my skin and it caused some minor burn marks (nothing too serious). Second, I would definitely recommend wearing a mask or respirator of some sorts. This has a nice lemon smell, but once the scent/air reaches your lungs, it really will make you cough. Lastly, I should mention that as a visual cue for all of this, while spraying with a pump spray, this smokes because of the high acidity. Nothing to be afraid of, but I feel it should be noted.Wrapping this review up, this did a fantastic job at cleaning the boat without doing any damage what-so-ever to the hull and bottom. Great product, will use again.

This is definitely the best hull cleaner that i have used in the last 30 plus years of of cleaning my boats, my bottom of my boat is black from setting in the water of Sodus bay, let your boat dry for a few days then spray it on and you can watch it run off, the real tough spots jut take a brush to it.wear gloves and a mask don't get it on your skin and don't breathe it in. I have a 25 foot Thompson Fisherman it took me maybe a hour to clean the whole bottom and sides. Amazing stuff.

It works! Simply put, if you take time to prep the boat surface, it's amazing! I would highly recommend wearing goggles, not safety glasses, and also good rubber gloves.For best results, I power washed the hull of the boat prior to use. I had a solid sludge line on the hull from the boat sitting in the water on an inland lake for six months....there was enough algae that I could have used a scraper to remove a 1/64". After power washing, I was left with a stained surface in which you could feel the remaining algae. I applied the product with a 2" brush and was shocked that the algae literally disappeared as I was brushing it on. For about 98% of the boat, a simply 2-3 brush strokes over the algae removed it down to the white hull. The remaining areas required it to soak in a bit and a second coat that quickly took it off. In addition, it took off the discoloration that was on the boat when I purchased it.....the hull literally looks new! For a 20' boat, I used about a quart and applied it liberally to the entire hull and outdrives and rinsed the entire boat afterward...I took the boat to the self serve car wash as I wasn't sure if this product would damage my driveway, lawn or landscaping. It did get on the trailer, bunk carpet and spare tire and I rinsed it along with the rest of the boat - it didn't appear to damage my specific trailer....I've used everything in the past, including straight muriatic acid....this work as well if not better. It's a bit more expensive than straight muriatic acid but as to the product itself, it works amazing! Wish I would have known about it twenty years ago.

After five years on the Mississippi I've learned the river scum is a real beast. After some research I decided to buy this Star Brite cleaner based on the reviews.GOOD - it was ridiculously good at removing the river scum. I haven't seen this white on the boat hull in years! When they say EZ-ON EZ-OFF it is just that powerful at removing the scum.BAD - this is a very dangerous chemical! The minute I opened the box and was hit by the chemical fumes it was apparent this is not your mom's cleaning solution. It literally burned my nasal passages as some had leaked in the packaging. Thankfully it didn't get anywhere else. Probably would have melted my vinyl entryway flooring.I also researched and bought a couple of brushes knowing that this was a very strong chemical. The first brush we used melted. After several dips and scrubs we realized it was leaving more black stuff on the hull than removing river scum. That was because it was melting from the chemical. The other brush didn't melt but it was not effective.We switched to rubber gloves (luckily I had some in the boat thanks to Covid Craziness) and hand towels which got things going and we were able to clean off the river scum. And the melted brush bristles.TIPS - be prepared. Be VERY prepared. This is a commercial grade cleaner that is a very strong chemical and must be handled with utmost care. Be somewhere you can rinse often - the boat, the ground, your skin. I would suspect this would kill everything in your yard if you were on the driveway. Lots of ventilation! Even though we were on a parking lot in the marina the fumes are super crazy. You don't want to be breathing this stuff. And finally, be prepared to rinse rinse rinse.BOTTOM LINE - this stuff works really really well but it is not for the faint of heart.