I've spilt some glass Polish onto the dash on the wife's motor! The dash closest to the windscreen is vented, a bit like a speaker cover and I can't get the polish out of the small holes/gaps. Any ideas?! I've tried FAB and a tooth brush but it's not reaching!!

Cotton bud soaked in IPA taped to a pencil?

Have you access to a steamer? Jet of steam might remove it.

One of those brushes which looks like a chicken / fat basting brush should do it I think.

Cotton bud wouldn't fit in.

I've no steamer.

A basting brush may work. I'll try and buy one and give it a go.