URGENT

Question
The reason the subject is urgent is because i'm getting rat's tomorrow and i need this question anwsered fast are jean leg hammok's or shirt arm hammok's ok for rat's?  

Answer
They're typically fine as long as the edges are sewn or reinforced in some way so that they don't fray. If your rats chew on them, the bits they swallow are usually so small that they pass through normally, the thing to worry about is if they chew a hole big/small enough to strangle themselves. I usually go with a square/triangular piece of fabric with holes in the corners and tie it up so its more of a level than a tunnel.