4 Stars By Ryan on 2016-12-06
A no scrubbing cleaner!
This stuff works really well! This was the first year I kept my boat on a slip all summer long. Other years I trailered it and only had it the water for 2 weeks max. On vacations. Usually after a few days in the water a simple sponge, brush or magic eraser would demote the scum from the hull. At the end of the year, those items didn't do to much to remove the nasty. I used the slimy grimy with HOT (as hot as I could go) water in a pump sprayer and just sprayed on. Before my eyes I could see the scum disappear from the hull! I only used about 3/4 gallon of my pump sprayer to cover the entire hull of an 18' boat. You clean see the difference in the pictures. And this is without any scrubbing. Just spraying the slimy grimy on and rinsing with water from a hose. Although it does an amazing job, it's not 100% perfect. It did not remove all spots perfectly and the real stubborn areas needed some slight scrubbing with an abrasive sponge. Another thing to note is that slimy grimy works best with hot water. As soon as the water starts cooling down the product looses its effectiveness or speed at eating away the scum. So one must spray on the boat somewhat quickly to cover it all while the water is still hot in the pump sprayer. Overall I will and have recommended this product to other boat owners and will continue to use it every season from now on.
5 Stars By Paul Badenhop on 2017-05-03
Great product for boat hulls
I had some serious scum on the hull from last season. Used this product with hot water and a sprayer and it worked great. Rinse boat, then spray with product. A little scrubbing and it came clean
5 Stars By Reese B. Middler on 2017-08-20
Took the green scum off the bottom of my boat instantly! Works great.
5 Stars By GPS Man on 2016-10-24
Unexpectedly AMAZING product!!!
I have a boat that picked up brown pond scum over the summer. It is stored on a lift but it still got slimed. I sprayed it on the hull using a 2 gallon garden sprayer and waited a few minutes. Before that few minutes were up there was brown liquid dripping down the side of the boat. I didn't expect it to work that fast or that well. My wife was as amazed as I was. I was going to have it professionally cleaned (it was that bad) so this saved me some serious $$$$$$.
It went really far. I cleaned a 23' hull and two WaveRunners. I still had some at then end and I had only mixed 2/3 of the tub! I ended up cleaning my boat lift also with the left over.
Spraying it on and rinsing alone got rid of about 90% of the brown scum. I had to LIGHTLY scrub the rest but only a little and it was gone. I fully didn't expect that it would ALL come off as it was caked on well.
For those who gave a bad review I am guessing it may not have been mixed with hot water and they were expecting it to just melt with no scrubbing.
I just ordered another tub and a bottle for touch-ups for next season!!
5 Stars By pamela compeau on 2017-06-05
This worked wonderful on cleaning the bottom of my boat. Would buy again.
5 Stars By Doocci on 2017-05-20
Nothing I have found works better to clean the Algiers off the bottom of my boat
5 Stars By Steven C. Smith on 2013-06-13
Best boat hull cleaner I have ever used
We store our boat on a lift so rarely do we have discolored hull issues, but one time a year we take a river trip from Guntersville, AL to Chattanooga, TN. After a few days sitting in the water, our hull gets a bit messy and usually takes quite a scrubbing to refresh.
This year I heard about Slimy Grimy and gave it a shot and it worked perfectly. I cleaned my 28 foot boat in less than 30 minutes using only a soft brush, garden hose and hand sprayer. I then let my buddy borrow my tub and using a 2 gallon pump up sprayer at a local car wash, he cleaned his boat with no scrubbing. His looks better than it has in years WITH NO SCRUBBING.
5 Stars By Susan Reynolds on 2016-09-07
New looking boat
My husband used this on the bottom of his boat that had not been cleaned for a few years and it looks like new!
5 Stars By Prime Devotee on 2015-10-17
Really great stuff
I've used this for years to wash boat hulls at the end of the season. Really cuts through a season's worth of brown that collects on the hull, and so much safer than boat hull cleaner.
5 Stars By Danny U. on 2016-10-17
This stuff is great! Just cleaned the pontoons on my boat
This stuff is great! Just cleaned the pontoons on my boat. Very thick algae from a season of docking at a local lake. Mixed 1/3 of a tub in a one gallon pump sprayer for each pontoon. Sprayed heavily on the algae and sprayed off with a pressure washer. Unbelievably clean. Just for the heck of it I just used the pressure washer on the other pontoon. Not good. Then I sprayed it with the slimy grimy and by the time I went to hit it with the pressure washer the remaining algae almost disappeared. I think next year I will hit it real quick with the pressure washer to knock the heavy stuff off then the slimy grimy and another quicky with the pressure washer. I think I could cut the time from 1 hour to maybe 1/2 an hour for both pontoons.