Still not sure how many workers there are but i have seen at least 14 outside the nest. They have over come their shyness now they have numbers and easily take down meal worms and injured, slightly crushed roaches and crickets. Aggression kicks in if their prey is still alive but they arnt so quick to use their sting but have done. Their tube is cramed full of brood and i really ned to upgrade their small home. One reason ive moved the leaf cutters loo out as i need the space.