I didn't want to put these into my Glad containers because I found them outside and some older larvae can be parasitized. So, I grabbed a 12 ounce plastic cup and put some plastic wrap over the top. I did put about 4 holes with a corn holder in the top. I think these would be great for the classroom. Easy to see into.
12 ounce plastic cup, plastic wrap on top, rubber band so contents, doesn't fall out accidentially. I put about 4 small holes with a corn holder in the top.
A closer look at the 5th instar larvae.
Younger larvae, no rubber band. The plastic wrap is strong enough to hold them in.