Dear Wendyl, I heard you on April in the Afternoon on the Living Channel a while ago recommending replacing dishwashing powder with a mixture of half washing soda and store-bought next dishwasher powder. I did this but it clumps up into a solid lump that is absolutely no use to me. How do I stop it from doing this? Peter, email
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Dear Peter, Yes, I too have experienced a few concrete-like issues with this formula, which I put down to the damp weather we’ve been having. Try whizzing it up in the food processor to get it back to a powder and store it with one of those silica moisture absorbers you get in new camera or shoe boxes. Just remember to give the food processor a thorough wash afterwards!