 oxy technology is what they use o3 molecules is what they send out they've got tons i mean thousands of five-star reviews you know that it works and it works very well any smell is going to vanish as it goes after viruses mold and odors in the air you'd have to cover up with sprays and candles and all that stuff it's going to go out and get that cigarette smoke the trash can smells the litter boxes dirty diapers they're no match for the thunderstorm and again they send out these o3 molecules that go behind and under furniture so you don't have to