Hey unkempt - I've had a similar dilemma with newborn nymphs climbing in bins - I think the problem is actually with specific brands. Rubbermaid for example makes these "Roughneck" totes that have the SLIGHTEST texture on the inside. The newborn dubia can climb these bins no problem. I currently use a brand that is opaque that was purchased from Home Depot years ago and have never had another climbing incident with the smoother plastic (the brand name eludes me...Home...something...). Sterilite makes a quality smooth plastic bin, but their bins tend to be clear. The texture is almost untangible, however, so shopping for the right bin can be a challenge. Be sure to compare and use a clear standard sterilte tote as a reference for comparison when feeling the inside sides of the bin. This puzzled me for the longest time when I was finding dozens of newborn dubia dead outside of the bins, lol.