I use it as well. i use 2 TSB per gallon when spraying and half of that when adding to my nute water. If I have to regulate during the last part of flower I will only spray and only the top of the soil and the lower plant so any young plants in the room will not get infested do to a two week stoppage of spraying. I have recently started using a product called Jungle Rain. It seems to be all natural, getting many good reviews from local growers and has a natural wetting agent in it for deeper leaf penetration. It is not made for deep soil penetration, so in otherwards you only use it as a foliar spray, but can spray the day out of the top of the soil.
Well, hope this helps.
PS. Also, it smells like some massage oils and what not, makes you think of some tropical drink, perhaps that is why it is named Jungle Rain.
Adieu