House cleaning for kangaroos

Hello, Matt:

I saw a documentary about kangaroos, and they said the baby kangaroo spends about six months in the mother's pouch before it comes out into the world. The one thing they didn't tell me was what happens to the baby's excrement while it's in there. Can you?

-- Sarah J., El Cajon

Does seem like things could get pretty ripe in there after a while. So think back to when you were a tad. When you spilled your milk, crunched your crayons into the rug, and generally messed the place up, who came along to make things tidy again? Good old mom. And mom kangaroo, two or three times a day, sticks her nose into the pouch and cleans the place up. Good old Mom. Yuck.