We get about 3 months out of a 40yard load of mixed wood fiber and sawdust. It comes dried, is put in bin with a roof, so it stays mostly dried. No door, so a driving rain might wet the front area.
Husband said the bucket on tractor holds 1/3 cubic feet, and I can bed the two box stalls pretty well, with half a bucket each. Usually removing one muck tub of dirty bedding from the colt’s stall, and a tub and a half out of the Old Mare’s stall. I can bed the four tie stalls well, with one bucket heaped up. All stalls are cleaned daily, with the tie stalls stripped, daily.
We find the tie stalls save on bedding, horses not wandering to mix dry and wet together, faster and easier to clean. Tie stalls also are a great training tool for getting over being “touchy” or spooky with folks in and out beside horse daily. This is a working farm, each is handled twice daily so horses here MUST be nice to live with. They lay down in tie stalls, bedding is a good depth to keep horses and HOOVES dry while the horses are in the stalls. Our horses use stalls between 8-12 hours daily, turned outside the rest of the time. Hours vary with the seasons, heat, insects and cold.
The wood fiber is VERY absorbent, kind of looks like mulch for the yard, shredded wood. Some sawdust added, for more absorbency at the company that delivers it. We had about the same use span, 3 months with 6 horses, when we used only sawdust from the same company in a 40yard load.
I only shovel bedding to go into the spreader, use the tractor bucket for moving it fresh and dry to stalls. Sure saves the body wear and tear with any quantity of stalls to clean and bed! Wheelbarrow is kept in the OTHER barn except for special needs. Just don’t use it that much with the bucket on tractor now.
You might want to consider width of a bucket on your tractor. Smaller bucket might fit the stall door width, so you can dump right into stall or clean stall into bucket, with less handling of loads. Think of climbing on and off tractor as “stair climbing exercise” in your daily program!! Ha Ha