This is our second year to do the insect lore "live butterfly's" habitat. Caleb loves it, this year we had double the butterflies. You receive the caterpillars in the mail in a cup and then they hang themselves upside down and you move them to the netted home. From there it takes a week or so for them to start hatching out. Its the neatest thing to witness one coming out. But they do it so fast you have to keep checking back once the first one hatches.