DW, I have 2 full milkweeds, but unfortunately they have the beetles http://www.mongabay.com/images/peru/..._1028_4632.JPG that eat them, and the butterfly weeds clean. I made some butterfly weed cuttings, and put them in the container method. ALso, no problem with the frass(poo) for me, the remaining ones im letting them stay outside, on a few cuttings, when they get bigger im putting a net on. Also, its bad news cause i dont have containers or any room for them, so im letting them outside