I've been thinking about making some for myself. Are the access points too small for drones or screen and board too close? Do you know what the measurements are? Who did you get them from?
Honestly, I think they can fit. It looked like they just didn't want to. I watched them try, but when it narrowed down, I guess it was beneath them to squeeze out.
I guess it doesn't really matter...they don't sting, so they're easy to brush off, and since they won't feed themselves, they aren't going to start ripping open caps when they get hungry.