I never make a mistake trad , well hardly ever .
Wfp sometimes when I do some insides I can see the odd trickle of dirt .
But that's us with the KEEN eye .
I don't judge them against each other , I use both , I'm good at both , simple .
Wfp if persons clean correctly Is very good , as long as you take your time with it then Wfp is good .
Rinse and rinse
Never had a complaint , got a few custies that prefere trad , so I do trad on them houses .
All I know is Wfp is far easier , especially in overcast cold conditions as drying with cloths in this is hard