Originally Posted by waresbear
... I would lay the blankets out on the lawn and spray them down with a pressure washer & soap, then hang them up on the clothesline and spray them with a hose...
I also have had good success with that technique. An alternative one I use in the winter months (that handles both saddle pads and house rugs) is to wait for a fresh snow fall then put the pad (or rug) on the snow, dirty side down. Next, wearing clean boots, I walk around on top of it for a minute or two then move it to another new spot. I repeat this a few times. Afterwards, it's hung inside the barn or basement to dry off. This one is not quite as good as a lawn wash but it does a passable job.