This stuff works great on lime & exhasut film on the back of the boat. I watched my buddy scrub and scrub using several things to try and remove exhaust from his transom. I walked over sprayed a little, very little and gaveit a couple min. wiped it right off.. He was shocked

Rust remover- The hull cleaner is the best product I have ever used to remove rust. Just spray it on and wait. No scrubby necessary. Depending on how much rust you have you may have to do multiple applications. Hands-down the best product I’ve ever used!

I have a Formula 353 and I leave it in the water over the weekends and I was getting a bad scum line and yellow color on my hull. I spoke with some of the people that drystack their boats in the same building as I do ...They told me about this product so I decided to try it and WOW I couldn''t belive how easy it was too use....Funny thing is I use Biokleen for my interior and never knew they made a hull cleaner... I use to use a product called on/off which worked well but was very hard on my skin and had acid in it which I was afraid to use on my hull...Try this its worth the investment......

Stopped at a Marina in Michigan, they raved about it, so I bought some, and I can say they were right!! This stuff took the summer scum right off!! I am very pleased with this product!

i LOVE THIS PRODUCT! It melts the grim off the fiberglass like a Hot knife though Butter!