I have a huge dust problem in my house (only 26 years old). We have 2 new ACs and furnaces, also a huge hepa filter on the AC system, and still use thinner hepa filters on the returns to prevent air from getting into the system, which we change every 30 day days on the dot. I did notice a huge increase in dust when we used the heaters last month during the freeze here in Houston. We’ve done some remodeling but it’s been a good 1.5-2 years, so I have no idea why we have this amount of dust still. You’d think I would have vacuumed it all up by now. We have a doodle, so NO shedding. I have a dust allergy, have to take Allegra daily, always itchy. Between that and the dust…I was looking for a purifier that could take care of bedrooms and not break the bank. I was extremely skeptical of this purifier, it had some bad and good reviews. I thought for $40 I’d test it out. However I just went to vacuum it after about 4-5 weeks, it was loaded! I run it on low to high, sometimes turn it off for a few days, doesn’t run consistently. You can even see the dimples from where the dust was accumulating in the holes of the outer casing. I was pleasantly surprised. Enough to get on levoitoutlet.com and share my review and post a pic of this filter. However my furniture still gets covered in dust, I don’t notice a difference in that yet. I’m still itchy. But I’m happy it’s sucking up dust that would otherwise be in my nose/lungs, or on my furniture/bed. I do think it helps with odors as well. It’s definitely worth it for $40 and I really like that I can vacuum the filter.