Hello- So I don't keep a dubia colony or anything, I just have a bin with egg cartons I keep them in when I order a few hundred at a time. I feed them left over salad greens since my beardie is not the best about eating salad. They get moldy in like two days, I keep having to clean the box out. Any ideas on how I can keep the greens/cartons from getting so damp and moldy so fast?
The only way to prevent moisture buildup is to keep the container very well ventilated. You can either poke a LOT of holes in the top or, if you feel like making a project for yourself, you could cut a large hole in the top of the container and hot glue a screen in place to provide adequate airflow. I did this with a metal screen to ensure the roaches didn't eat through the fiberglass ones (not sure if they can or not). I bought 2 containers, altered the top on one, and then I had a backup container to use when I needed to clean one. Entire project was under $20 and it's been working really well for me for many months.