U can soak the whole plant down without harm. Dont use anything with powerful force just spray to soak and let sit for a few then rinse. It will not affect the buds at all ive done it on 3 plants with no harm done. Just make sure all leaves dont have water spots before u put back into the light so u do t get burn spots. Never tried the milk one but i have done the h202 mix on this plant is one i did 3 days ago started to get some wpm on her. Room she is in seems to stay 80 alot of the time. Fan died on me and that caused no flow of air and created wpm. It is a blue cheese auto flower
Good luck ull get it figured out im sure.