We have someone that is willing to supply us with oak shavings for free by the truck load. I have read that the bark, leaves and acorns are bad but is the actual wood bad for them. I doubt they will ever eat very much, if any of the shavings since we only want them for the back of the stall and he will be fed in the front. One bag is already dumped in a stall, I then realized I should research to make sure its not bad for them, research didnt help much. Please help!