remove rust stains from fiberglass ?

[Line Dancin]

So I removed the old seat and where it used to sit against the fiberglass there are all these little rust stains from where the staples were that held on the vinyl. I have scrubbed these and scrubbed them use a brillo pad and cant get them off. Is there anything I can use to get rid of these rust stains the new seat base is a little smaller and you can see these unsightly stains.

[N II Deep]

Try the works toilet cleaner.

[Gnarf]

Not sure about rust, but the magic eraser things work incredibly well on dried old blood and grime.

[sherman51]

try some clr rust and stain remover.

[Moby Dick]

Have you tried Ajax with a brush? Or soft scrub?