I've noticed that there are a few spots of rust in my glass carboy, probably from the rust on my carboy brush. They're little tiny streaks, mostly at the neck. Is this something to worry about, or no big deal?
I would never use a dead mouse in my beer. It's much better to use live ones. You could probably just steep a dead one, but live ones must be mashed. Actually, smashed and mashed would be best.