I have found out that over dirt, it becomes a swampy mess under the mats as water, urine, etc find its way through the seams and buckle the
mats. (I am assuming your
mats are the solid rubber ones...not the ones with drainage holes). So, this will give a nice, solid but cushioning base in the stall. Stall mats really make things better for any horse, especially one with health issues. A thick bed of shavings will additionally help.....