Comments about Marykate On-Off Hull and Bottom Cleaner:

I sprayed this stuff on the bottom of my runabout and that dried on green film that just won't come off literally melted away even before I finished spraying. I then took a long handled soft brush and just washed it around and then rinsed and the bottom was clean as new. This may be the best product I have ever used as far as doing what it says it will do. READ AND FOLLOW THE DIRECTIONS, WEAR GLOVES AND DON'T GET IT ON YOUR SKIN. THIS STUFF IS SERIOUSLY STRONG.

Comments about Marykate On-Off Hull and Bottom Cleaner:

i tried this stuff out cause my marina told me to i keep my boat docked in fresh water it is not bottom painted just has gel coat and i took the boat out and it was a disaster i thought i would never get it clean i tried using 3m rubbing compound to get it off and even with a buffing wheel and the strong compound it wouldn't budge took off a little but noting near what i wanted the whole bottom was done went to the store picked up a bottom what did i have to lose i sprayed it on the boat whole used windex top to spray it with and all of a sudden i seen smoke after the smoke i just seen the ick running down the hull i sprayed the bottom side the whole hull of the boat within minutes the boat looked like it just came out of the show room compounded and waxed it and wow made my boat look like brand new it burns ur hands so wear gloves you are dealing with acid and try not to breath any fumes in the stuff is strong but it is magic so just be amazed when u go to clean

Comments about Marykate On-Off Hull and Bottom Cleaner:

Clean boat hulls. Works great!

Comments about Marykate On-Off Hull and Bottom Cleaner:

I moor my boat in saltwater so you can imagine what the hull looks like after the summer.I use to use soft scrub w/bleach took me 2-hrs to do my 21 ft boat,I applied this with a paint brush let it sit for 60 sec...GONE..took 30 min.to do,and no sore muscles.This stuff is great.

Comments about Marykate On-Off Hull and Bottom Cleaner:

I've used On- Off for many years on my fiberglass/gel coat boat. I'm in staining fresh waters in the Midwest. I wipe my boat down after every use, but staining is still inevitable. I use On-Off to remove this stain once or twice a year. Handle the product with care as directed. I simply sponge it on and rinse immediately. The staining is removed instantly. This must be followed up with a good protective coating, I wax.

Comments about Marykate On-Off Hull and Bottom Cleaner:

Spray on Boat Hull, Rust Stain, or Organic Stain.

Works in seconds without smell or burning!

Do not use on glass!!

Comments about Marykate On-Off Hull and Bottom Cleaner:

Very impressed with the ease and speed of use.

Comments about Marykate On-Off Hull and Bottom Cleaner:

This stuff works great had a customer with a boat that had red clay stain from the lake on the hull. This stuff cut right threw it and took all of it off and even the rust stains. But beware this stuff will burn your eyes, skin and lungs so wear all the protection it recommends. I highly recommend it and will be using it in my business for now on.

Comments about Marykate On-Off Hull and Bottom Cleaner:

Very powerful stuff, use as directed and you'll be amazed with the results.

Comments about Marykate On-Off Hull and Bottom Cleaner:

This product works better than you may expect. It is important to read and follow all the directions but the performance and results are exactly as advertised.

Comments about Marykate On-Off Hull and Bottom Cleaner:

I used it to clear a very heavy growth from the waterlne and areas of the bottom and rudder. It powers right though and took it down to a clean surface in just a minute. Use rubber gloves and a sponge with a scrubby side to knock off the heaviest stuff.

Comments about Marykate On-Off Hull and Bottom Cleaner:

This product really does work as advertised. I will find another product though that has less toxic chemicals. The smell and vapors scared me. The warnings all say not to let this product get into the water supply. Barring a recovery system, that's impossible. This stuff is too scary to use in good conscience.

Comments about Marykate On-Off Hull and Bottom Cleaner:

Applied product to boat hull as per directions and was amazed at how well and quickly the cleaner worked. Neighbors have already purchased the same product to use on their boats.

Comments about Marykate On-Off Hull and Bottom Cleaner:

On-off really does a great job on those nasty stains. Easy to scrub off those brown waterline stains. Works well on green bottom slime as well.