Sheepskin rugs are a hefty cleaning job all in itself, and a lot of first time rug buyers are not too sure on how to clean the rug properly. Depending on whether or not you got a synethic or 100% natural sheepskin rug, you'll either be able to hand wash or put it in the machine.
First up I'd like to stay clear of using any sort of water and cleaning liquid just yet. I have an old trick that I like to use when cleaning by sheepskin rug. First get your hands on a stiff metal brush, and either a handheld vacuum or your large vacuum. If you're using your large vacuum I'd recommend covering the hose with a pantyhose, or something similar. Take the metal brush and give your sheepskin rug a nice brushing from head to toe. Once you've brushed it out gently run the vacuum over everything and hopefully you'll get most of the gunk out.
If you managed to get a stain of some sort on your rug, or must clean it with water and solution, then lets go over the particulars. Some people tend to put their sheepskin rug into the washing machine but I don't really recommend it. It will be fine for a couple of times, but your rug will quickly lose its luster and plushness. If you need to wash your rug in water then I suggest you draw a cold bath and use a cleaning solution that's sheepskin friendly. Gently wash your rug in the water for 5 minutes and then hang it to dry for 7-10 hours. Once your rug is dry run your metal brush through it until it comes back to life.
Some sheepskin rugs can be machine washed and they'll say on the tag. If that is the case, make sure to wash it in cold water only and NEVER, ever put it in the dryer. If you want to leave it up to the professionals your local dry cleaner should be able to take care of your rug. A dry cleaner will charge you a decent amount for cleaning these types of rugs, and if you have anything over the size of a quad it will definitely cost a lot.
There are a few cleaning solutions made specifically for sheepskin rugs and similar furs. You can use good old Google, or call your local dry cleaner to see what they recommend. I know that this cleaning method isn't the most ideal, but if you love your sheepskin rug you'll want to keep it clean and soft for as long as possible.