We've just had the en suite replaced and already where the sealant meets the shower tray, it's beginning to go brownish/blackish. We've got shower panels so no tiles and grouting to deal with, but I really want to keep it all looking new and fresh.
What can I spray on and leave for a while before rinsing off? I do a pretty thorough weekly clean at the moment with mr muscle bathroom spray but it's not shifting everything.