The works toilet bowl cleaner

[ILT]

I have some stains from army worm poop and can't seem to get it off. Thinking of buying fsr or the works toilet bowl cleaner. I see it works good for water stain when the boat is in the water for a long period of time but will these products work for my stains?

 

[SigSaurP229]

I have yet to see anything the works wouldn't strip off. My wife used to clean repossessed mobile homes, with all fiberglass sinks tubs and such, it would strip everything off of the fiberglass, HOWEVER if you leave it on to long it will smoke and melt right through the fiberglass as well.