A: To prevent mould developing on grouting and sealant, wipe down the shower screen, bath and tiles with an e-cloth after use and use an anti-mould bathroom spray once a week such as Dettol Mould and Mildew. If grout does become discoloured, scrub with an old toothbrush dipped in a solution of one part bleach to four parts water. Cillit Bang Bleach spray (white topped bottle) if you want to buy a ready made product or if your problem is limescale then you could consider Viakal.
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