This is the best thing I have bought in the past year. If you have a pet that likes to lay on your furniture, you NEED this. First photo is what the vacuum was able to collect off of a single sofa cushion immediately after being vacuumed with a Dyson canister vacuum. This vacuum gets dust, dander, etc that my Dyson could not. As a bonus, each vacuuming pass covered a bigger area than my Dyson vacuum attachment. Second picture is everything this vacuum picked up off a single sofa cushion that I didn’t pre-vacuum with the Dyson. It was loaded with dog fur, dust, dander, etc. This vacuum got it all, and in faster time and less effort than it would take with my Dyson. I was worried whether this could handle the sides of the sofa and the vertical surface of the sofa back due to its weight. This vacuum isn’t the lightest, but it was manageable for those surfaces. I tried the vacuum out on some pillows as well, and it was amazing at cleaning them too. The brush roll is made up of alternating materials. There’s rubber fins and a brush portion. The brush portion is fairly soft, which makes it seem like it would not damage upholstery. Notwithstanding the softness of the bristles, somehow this vacuum was still a cleaning beast. Since you can’t visibly see dust mites, I can’t tell if the UV light and ultrasonic signal are actually killing dust mites. I would, however, still think this is worth the money even if they aren’t completely effective due to the amazing cleaning ability with just suction and the motorized roller. That alone should help eliminate what the dust mites feed on. I’m excited to test this on my mattress and upholstered headboard to see if there’s any allergy symptom reduction that would indicate it’s working on any dust mites. I chose this model over the others because it has a HEPA filter and looked like it had a larger dust cup to better handle pet fur.