By Mariam Khan A cleaning expert who shared her frustration at reviving white trainers to their original glory has shared her expert advice on making old mucky trainers sparkling white again. The professional cleaner, Anita Birges from Sydney, has revealed the easiest way to turn dirt-stained sneakers white again with just three simple ingredients in no time. To try it, you will need three ingredients which you probably have in your kitchen cupboard already. The mixture includes a quarter cup of dishwashing liquid, half a cup of hydrogen peroxide, and a quarter cup of baking soda into a paste …