By Niamh Kirk No matter how clean your bathroom is – if your grout is grubby it will make it look unclean. Without regular cleaning and maintenance, grout can become discoloured and will stain very easily – but thanks to one cleaning expert, there are two household items that can help keep your grout white. A build-up of shower products such as shampoo, body wash and even water can contribute to the build-up of grime and mould on your grout, but cleaning expert Kerry Hale at Mira Showers has shared how you can stop them from looking unappealing and recommends using baking soda and hydrogen per…