Wood shavings have quite a few benefits that make it a superior choice in many cases to provide bedding for horsesâ?? talls. Not only does pine smell wonderfully aromatic thanks to natural odour-absorbing oils, but it is also antibacterial and has ammonia-reducing properties. Other species also have benefits, but one you want to completely avoid is black walnut, as it can cause laminitis in horses. Cedar is also not recommended because it doesnâ??t decompose easily, and some horses may have skin sensitivity to it.