I was reading up on rats (just got 3, 1 male 2 females) and the website I want to said: NEVER USE CEDAR OR PINE SHAVINGS AS THEY WILL CAUSE RESPITORY INFECTIONS AND WILL MAKE YOUR RAT(S) SICK. This was a pet rat website just btw, not a feeder rat website. All the feeder rat breeding instructions says you can use pine bedding, hell, the zoo I work for uses pine bedding in their rat house. So whats so bad about it? I'm asking this cause I'm keeping my rats on pine right now. I have a massive bag of it and I don't want to waste it.