My bathroom tiles are horrendous, as is the silicon sealant. Really black.
I try not to use bleach in the house (hence my predicament, it wouldn't have got to this stage if I had bleached the f*k out of it from the start)
I'm allergic to bleach. It affects my breathing and brings me out in a rash around my mouth and nose - melodramatic but true.
DH could do it. But he does loads of other stuff and the bathroom is supposed to be my job. I'd like to find something that works if poss.