Mrs Hinch fans have shared their top tips for cleaning discoloured tile grout, including using bleach, bicarbonate of soda, and The Pink Stuff. One fan suggested using bleach and a toothbrush to remove orange stains from shower grout, while another recommended using bicarbonate of soda and a toothbrush to clean sealant. A third fan suggested using The Pink Stuff to remove soap scum from grout. Experts at The Grout Medic warn that bleach can erode grout over time, so it’s important to use it sparingly.