I would avoid spraying neem if you plan on releasing predator bugs into the tent to manage the trips, Neem will coat the leaves and bugs all ready in there and then when the predators are released it will hurt them as well. I would stick with the predator bugs and wait to see if they work. if there is not enough food for them they are going to go and find some and leave the tent. good idea to also use BTi if the bugs fail.
Good Luck!
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