I have been using 5 minute epoxy for this. Been doing this for years, never once did I consider writing about it. Never thought it was a big deal, but I can see by the reaction here that it is.
I have built a few enclosures like this and my cricket barrel is a half trash barrel with holes in the lid and sides that are covered in metal screen mesh. Crickets can chew through nylon mesh. I recycle the mesh that comes on the cases of crickets I buy.