No scientific proof at all but it feels like washing powder does a much better job at removing stains than washing liquid.
It also seems more and more difficult to find washing powder in store as manufacturers are moving to liquid and even more a rip off - pods. Don’t get me started on these money spinners.
What is your experience and what works best?
I’ve heard before that powders/solids are generally easier to mix than liquids, because you can just have all the active parts go when water is added.
With liquids (or really water-based solutions), there’s already water in there, so you have to design the reactions, so that they only start when a certain water concentration is reached, which is a lot more fickle and limits you in what you can do.
I could imagine that giving powder an advantage, but I also don’t have scientific evidence. ¯\_(ツ)_/¯