I recently changed over from trad to wfp, and I am getting inconsitent results in my first month. Half the houses I clean have come out perfect, but I noticed this week all the jobs I did had drip lines and spotting. I cleaned my own house after reading various different bits of advice, rinse rinse and rinse etc, and noticed that it was dripping 10-15mins after the clean that was causing spotting, both upstairs and downstairs. Can anyone give me some advice on how to prevent this and to overcome spotting. Thanks!