I think this one may need to be explained a little more.
Wood shavings can be used if thats someones preference as i keep one piggy on them but until yesterday i thought this was the same as sawdust so i think if you put this point you may need to clear that up haha.
sorry if i sound dumb get confused easily lol but i use wood shavings one my rabbit i thought it was different to sawdust is just like dust and make me sneeze ( my nan once got me a bag for 49p from home bargins and it was awful made my rats sneeze)