I have noticed in quite a few places now that soda crystals are being recommended as a cost saving measure for washing clothes with as “they make up a large percentage of washing powder anyway”.
Is this a good idea and will it cause more harm than good in the long term? I know nothing of the technicalities of washing powder so thought I’d ask some people that might know!
Complete tosh, I’m afraid. There are no soda crystals in detergents, either. By far the most economical way to wash is to use a quality powder and pay particular attention to the dosing instructions on the box.
Combined with correct loading and sorting and a monthly service wash (90c and a quality whites detergent), your machine should function at its best.