I'm probably preaching to the converted when I say that quality hay is essential to keeping horses healthy. Equally, for economic reasons horse lovers use chaff in order to reduce wastage especially if it is fed to the horses in troughs or nose bags.
Another major advantage of chaff is that trace elements and other additives can easily be mixed with the chaff to give the horses the best nutrition.
However, a major disadvantage of buying chaff from your produce supplier is that it can cost up to twice as much as the equivalent hay content.
Simple answer is chaff your own.
Chaff cutters can be big or small, expensive or reasonably priced - either way, most horse lovers, trainers, pony clubs etc can own a machine that suits their needs. The major advantages are: cost savings, fresh chaff when you want it and many years of good service from your machine.
So give it some thought
PS If you need one, contact me