I’m not completely familiar of the causing agent on Fairy / dawn or what ever version you would have, but thing is i believe it does leave a film on to the surface of being cleaned, imagine those car windows not fogging up again after, this does not work with most or none other cleaning solution that i’m aware of.
i am not talking here on a visible clear film, but for example in brewing beer, it will cause the beer to lack head if you ferment it in a container cleaned with dish soap, or if you clean your shower mirror with fairy that will not fog up anymore.
It works cleaning the build plate pretty well, dont get me wrong, but id still rather have it completely free of anything, and maybe it still can be improved on.
I quess i will do my test on the PBW later, i for unrelated reasons have almost 20 kilograms of it in powder, definitely want to use that if possible.
Edit. your info has been very good so far, i’m not trying to argue with what you say is wrong, rather trying to improve since i have a ton of that stuff.
Edit2, also yes, additives in the dish soap “fairy” is even worse, and i am not talking about those.