Excellent product. I have tried similar products but they did not work anywhere as well.

this stiff is great i tried everything from industeial cleaners to bleach. i sprayed small amount of this on a area about 2 foot. it had cleaned th area before i could even turn the water on to rinse it of. the hull of my boat has never looked this good.

This stuff works! No scrubbing! I fish saltwater in south Louisiana and deal with scum lines on my boat every time I go fishing. Spray this stuff on and let it sit for a few minutes and then spray it off. This product also removes rust lines.

I have has a scum ling on my boat for years & nothing worked to remove it. In 10 minutes, the scum was gone. I sprayed & followed the directions & it WORKED just as advertised. Several guys in the boat yard asked what I used & I showed them. You should have several more new orders

<p>I live in Key Largo, we are on a canal, the salt water doesn't flow in our canal, my boat lift broke, it took 2 weeks to get it fixed, my 23' bow rider sat in the water for those 2 weeks, we went boating twice, the hull developed a brownish/yellowish coating from the water line down, used bio-kleen scum remover today 5/29/15, I didn't have to scrub, all the crap disappeared in 15 minutes, I barely had to flush it off.</p>