A little bit of preventive maintenance does a lot to keep things in check. Once you get your Captain Jack, apply it once a week no matter what all the way to harvest, and spot treat mid week in between with some neem or some Dr Bronner Soap if you see any bugs on the plant. Cap Jack isn't a contact killer, it's a bacteria called spinosad, safe to humans, poisonous to bugs but only if they eat some of your plant. Youre still subject to swarming (weather related pest events) and bugs can still lay eggs so it's only part of your management, not the whole solution. Best approach is to think about layers of protection and the more layers you put in place the less bugs are getting to your plant.
Mites are particularly problematic for cannabis because they're so small and often position themselves unseen, laying the groundwork to colonize and once they're on your plant and colonizing, they're usually on it until the end and all you can do is control the numbers.
