Nope. Not at all. The alcohol is too low of a concentration. It kills the bugs, molds and fungi and quickly evaporates away. Then the potassium bicarbonate is residual to fight he molds and fungi. The best results (and they have always been good) I have gotten, were while using and airless paint sprayer. When atomized that way it gets an even and really thin coating all over the plant quickly. And then because its so thin it evaporates very quickly. It's mist is so fine that it fills the air and kills anything that may be flying around too. When I notice the bugs, I spray every other day for five days then every third day for nine days or so. And like I said, I do this in flower as well.
For the potassium bicarbonate I use 1.5-2 tsp./gallon. The alcohol, I use 70% cut in half (actually I cut it with another pint sometimes in flower) with tap water. And maybe a ¼-½ tsp for the castile soap. And if anyone is worried about the potassium bicarbonate residual, 1) it's omri approved. 2) since there's bugs,you should probably be washing your buds anyway. And 3) without it, the bugs you kill and the poo they left behind become vectors for the the mold and such the bicarbonate protects against.
People i know have balked at the price of an airless sprayer but it's the best piece of growing equipment i have.
