Wish you every bit of success, Vinni! It's really not necessary to spritz water inside the container - in fact, doing so might actually do harm as it will encourage mold growth. Show answer to your inquiry: your cat is simply getting ready to molt. They'll do this a total of four times before forming a chrysalis. Prior to molting, they'll crawl away some where and just sit for a few hours; and then they'll molt before you know it.

Here's nice write-up on the monarch life cycle/stages. And here's a good overview on how to raise monarch cats indoors. (Googling 'raising monarch butterflies' will yield tons of helpful information.)

We love progress pics, so post when you can. Good luck!

PS Don't freak, but after they molt, they'll turn around and eat the molted skin. :)

Success! :) He's J-looping -- should be a beautiful chrysalis within 24 hours. Immediately before the cat turns into a chrysalis, its antennae will hang straight downward and look droopy and shriveled.