1 Determine where the dirt is on the faux fur boots. If there is a particular spot that got stained with dirt then you can just clean that area. If it is the entire boot then you will need to spend some time cleaning.
2 Spray upholstery cleaner. Spray it on the area that needs cleaning or the entire boot. Avoid soaking the boot down with foam. If you use Bissell's Fabric and Upholestry Cleaner then there will be a brush attached and foam will come through allowing you to brush the foam into the fur. Be careful not to tangle up the fur.
3 Leave the faux fur boots air dry or blow dry them with a hair dryer. Keep the hair dryer at least 6 inches away from the fur.
4 Brush and comb through the faux fur on the boots. Use a fine comb and do not pull if you come across a tangle. Gently try to untangle the fur with your fingers. If it is a small tangle try to comb through it with the comb. Use the brush to fluff the fur up after tangles are removed, if any.
5 Vacuum the faux fur using its brush attachment. If you find dirt or particles within the fur of the boots then you don't have to go through all of the steps to clean them. You can use a vacuum to suck the dirt out of the fur.
6 Take the boots to the dry cleaner's if you are unable to clean them to your satisfaction or don't have the time to properly clean them. It could cost around $15 to have them done depending on the cleaners.