So I just got my first thing of nightcrawlers(from Walmart, DMF Bait Company), and now I've got some questions!

1. Do they have to be cut up? I just looked at one and it looks about 2 in. long, and my snake is about 21 in. long. He can down silversides just fine, and it seems about the same size.(I didn't look at all of them though, and not sure if any are bigger, because I thought they were alot bigger than that.)
2. Do I need to clean off all the dirt before I feed it to him?
3. How long do they last in the fridge?(Do they eat the dirt they are packed in?)
4. Hypothetically speaking, if I had to like cut one in half, and wanted to save the other half, can I just put it back in the container? Or is that uncool? I know they can live after being cut, but I don't know if that's mean, or if it's maybe unhealthy for the snake to eat it later, with dirt getting inside of the open wound on the worm.

Hmmm, I think that's it Sorry, I like to ask questions. You never know till you ask