I think a watched meal worm never pupates! I "worried" at my meal worms for weeks... I decided to somewhat ignore them and they went crazy! That was late summer.Now I am on the second generation and I have a zillion babies! Remember that they seem to like darkness... so I keep 2 -3 layers of newspaper (misted with water when the weather is dry (rarely) or the heat is on (often, lately!). Good luck! I know my girls will enjoy my farming efforts when the snow is here to stay and other buggy treats are unavailable !