We learned this the hard way. Ocean growers should be very careful as to when/if they are spraying their plants. Mold becomes a humongous issue. That is why I recommend the granular version of Bt. Although, Bt is only a small line of defense. We know that several lines of defense are the only way to minimize worm damage, and maximize yields. Bait plants, companion planting, tenting, netting, Bt or spinosad, all of that can fail completely, the worms can get inside the inner buds, and from there no BT drenching or fairy dust is going to kill them, the only way to do it is to literally open up the nugs and pick them out with an ice-pick! It is especially brutal if they go un-noticed, and they do. Lady bugs help, but predator mites would help more by devouring the eggs. Praying mantis are too large, and aren't very good at eating worms, but they do a good job with the other bugs. Can never hurt to have some lady bugs out there though