My daughter got that set for Christmas. I must remind her to send off for the bugs.T.I.L
From chatting to my neighbors girlfriends 7 years old daughter this morning.....
You can buy butterflies in the post to release.
Someone had a bright idea to make some cash there
From what I could understand from her, I think she said you buy them online as caterpillar's then naturally they turn into a chrysalis, then you let them go.
Wish I'd thought of that idea!
I have some slugs, but not sure if they have the glamour