I have the mini in my laundry room (cat litter box location) - visitors swear they don’t notice any odor. I also have two regular size Sans filters. The one in my bedroom has made a significant difference in my allergies. I typically wake up with crusted eyes, stuffy nose. We just went thru pollen season and no symptoms! The unit I’m my den is placed next to my pet rabbit’s area. Visitors swear they don’t smell rabbit bedding/pet store odor. Worth it!!