Hello, nice plants! You should definitely try to get most of those white flies before they continue to grow out of control. They are very common and are a invading pest to most gardens. My fiance and I cultivate as well and have experience with pests, like white flies and some of the common pesticides that are used for cannabis gardening. I wound definitely not use Captain Jacks for white fly as i have seen no effect on them. Also, most testing labs test for the ingredients listed on captain jacks because they are not safe for human consumption. I would highly recommend using and product called Safer insectal Soap and for us it is highly effective. They hold two organic certifications and it is safe to use for organic cannabis gardening. With pesticides like the CJ formula, the white flies can build up resistance to the ingredients, but they cannot with soap.