You've probably thought you heard it all about help with stains

[reelapeelin]

Here's what you need...

http://www.jamestowndistributors.com...Bottom+Cleaner

But be REEL careful when using it...has about 3 different acids in it and will cause immediate respiratory distress if inhaled...some BAD stuff, but it will get the caterpillar poop off your boat...read the directions closely before you use...Academy Sports also has it...I got mine thru a marine dealer..

[HookedOnMarsh]

Yeah what Reel said to use is the way to go. I wonder if one of those acids in it is oxalic acid? I use a Attwood product from Wally that contains oxalic acid. It is pretty powerful stuff. Will take the top layer of your skin completely off leaving your hands feeling like you got dried glue all over them if you don't wear gloves while you sponge it on.
I love the stuff, sponge it on, watch the stains turn white like magic, then spray off with a hose. Scrubbing with the sponge on any stubborn spots usually gets everything off. Then I use some wash and wax and it looks beautiful again.

[reelapeelin]

Originally Posted by HookedOnMarsh

Yeah what Reel said to use is the way to go. I wonder if one of those acids in it is oxalic acid? I use a Attwood product from Wally that contains oxalic acid. It is pretty powerful stuff. Will take the top layer of your skin completely off leaving your hands feeling like you got dried glue all over them if you don't wear gloves while you sponge it on.
I love the stuff, sponge it on, watch the stains turn white like magic, then spray off with a hose. Scrubbing with the sponge on any stubborn spots usually gets everything off. Then I use some wash and wax and it looks beautiful again.

Yes, Oxalic acid IS one of the acids in On & Off...the one shown in the link is formulated specifically for use on FIBERGLASS...DON'T get it on painted surfaces or aluminum trailers...

[lathehand]

Thanks guys I bought some toilet bowl cleaner and I'll try it today.If that don't work I'll get some of that hull and bottom cleaner.I was talking to a guy yesterday and he said what he has done is to get some swimming pool shock and water and just let the power of the sun bleach the stains out.He says it works good but takes some time.That would be OK if the boat didn't look so bad.I wish I could post some photos of this mess but I don't have a camera

[killntime]

After you get all or most of the stain out, suggest you wax any area that was exposed to the cleaners you have used. Waxing will provide some protection against further staining and UV rays.

[Destroyer]

Reelapeelin is right on the money (again)... The Hull cleaner is the best stuff out there. It's made by Marykate and it's called On and Off. It will work instantly not only for bug poop but also for just about anything you can throw at it....hull scum, tar, barnacles, you name it. It's powerful stuff, but it works like nothing else and WILL NOT harm your fiberglass. I use it all the time.

A word of caution!!!! This stuff is NASTY on your skin and even WORSE on your eyes.. FULL GOGGLES ARE A MUST when using it, as well as the aforementioned gloves for your hands.

What makes it so powerful is:

Hydrochloric Acid

Rubber gloves, protective clothing and eye protection are essential.. and DO IT OUTSIDE... the fumes from this stuff are just as bad for your lungs as the stuff is for your eyes.