Horse vacuums are one of the most useful things if your horse is trained well enough to use one. It works so much better than using grooming brushes and can increase the time needed between baths. I would have never though to use one myself (I'm afraid of vacuums-don't ask) but I went to a clinic at a different barn and saw someone using one. When I asked about it I was shown how it works, and allowed to try it on one of the horses. While its probably not for the average back yard horse person its definitely nice for a medium or large stable.