Let's compare air dry to Kiln Dried shavings and High temperature Heat driers (up to 800 degrees) Kiln Drying * - Wet green lumber is put into a kiln - dried to about 7% moisture content, then planed, these dried shavings from mills will break down fast can be very dusty. High Temperature Heat driers * - Take green shaving of 45-50% moisture content is dried down to 12% or less. The Burner runs off waste from drier and this waste produces dryer temperatures of 600 to 800 degrees. Shavings can easily "over dry" and become as brittle as the Kiln Dried shavings. JTS Custom Air dry process * - Takes months, this is a long process but better end result - Shavings not dusty, don't break down as fast, and yet still very absorbent - We were all setup to install drier but thought it better to make the best product we can. Kiln and heat dried shavings are brittle and begin to break down into dust once your horse walks on them. Many horses that pace in their stalls can grind a stall full of heat/kiln dried bedding to powder in a day or two. At JTS the pine logs your shavings is made from is starred and monitored for a proper level of dryness before it is made into shavings. A hand full of kiln or heat dried shavings that you squeeze very tightly can will be turned to a mass of dust when you open your hand. Remember, your horse is constantly eating on the stall floor where this dust is laying. When you do this same test with JTS air dried shavings, after scrunching a handful or even grinding the JTS shavings on the floor with your shoe, you will see they still are shavings and not a dusty pile on your floor. To see how our shavings can stand up to this test, call for a sample bag and try this yourself.