Thanks!

Those seems to be really good small bins. They're not made by sterilite so maybe they're just better in that sense, but I will keep an eye. I don't think a baby (hatchling) corn could get out, but it's possible something a little larger could.

I'm doing whole room heating so I don't have to deal with heating that stack of tubs plus the other side of the room, which are wooden showcase enclosures. Much easier