pull the balls off before they open.... if you get to them in time they wont pollinate your female. or separate it from the female, it will ruin your harv.
Well , if there aren't too many male sacs, you could try removing them?
Males seem to drop pollen when no ones around, regardless of planning!
I put any questionable plants furthest from my fan(s) to hopefully minimize any unwanted pollen damage.
