Bit disappointing - I've used de-mould spray before and usually when they're left to work it's easy to just wipe off and all the mould disappears. This one definitely took some quite significant scrubbing and there's still some stains/evidence of mould remaining. I did two passes, but it was quite hard work and it's not looking as good as more traditional bleach products so I don't feel as confident about painting the surface as I don't want to just paint over the issue.
BEWARE !! You need a very well ventilated area. Very strong chemical odour. Too toxic in an enclosed space, can't breath. Otherwise it seems to work!
