I went to the feed store today to get some pine shavings for the coop but all they had was aspen. I bought it but now can see it is shaved much finer than the pine and it not quite sawdust but pretty close. Do you think it is okay for litter for the coop (and I usually put some around in the run as well)? Or will it pose a respitory threat? I can mix it with the bit of pine shavings I have left or skip it altogether and try to find some pine somewhere else in town. I have four pullets and a young rooster who sleep in a smallish but ventilated coop if that matters. What do you think? THANKS!!