What nest are they in? Could I see a picture of the whole setup?
A 3d printed setup using a Pringles lid, they used to nest all over the place but then they decided the main area was the bottom chamber, the reason there is tooth picks is because I used to put honey on the toothpicks and they decided they will drag the whole thing into the nest and eat like mad. The substrate pile on the top chamber is the pupating area and the middle chamber is where they would occasionally place the pupa because it is dry.
The nest:
