I'm leasing a 6 year old mare and the owner has told me that this mare has been abused in the past. She also informed me that this mare has been eating the landscaping woodchips that are used in her paddock and all around the boarding facility where the horse is kept. I don't know if this is like cribbing, or done out of stress, due to a stomach problem, or boredom, but she doesn't seem to be wind sucking or chewing on the fence posts in her paddock. She does seem to want to eat the sand and dirt on the ground.
Does anyone here have any advice or ideas of what may be causing this and how I can help to stop this? The horse is already being treated with Sandclear.