There are so many predators that eat caterpillars so raising them in an enclosure is a great idea. I used a Glad container and covered the top with a netted footy you get at a shoe store. This container worked great for raising them when they were small.
I put a paper towel in the bottom so I can easily clean up the caterpillar droppings. Each morning I put in three milkweed leaves. I ripped a small piece of paper towel, wet it, and then wrapped it around the milkweed stem to keep the leaves from wilting too quickly.
|My monarch caterpillars attached themselves to the plastic container when ready to molt. |
As they got bigger I started adding more leaves. I put new leaves in the morning and before I went to bed. When they reached almost a inch I put them outside in my pavilion. Then once they had had their fill I brought them back inside to make chrysalises.