After we mentioned that silicon mastic in bathrooms could be cleaned with baking powder and bleach - what do you know - one of our Spanish members told us about a lady in Australia who uses almost the same technique on old and discoloured grouting.
Find out more here: https://www.dailymail.co.uk/femail/article-8753865/Mums-genius-grout-cleaning-trick-leaves-bathroom-walls-sparkling-clean-seconds.html
