Most Ionic devices have a wire or a needle but these have 1 primary needle and 16 additional needles. You can actually see the ionized air at the tip of each needle. I have 4 dogs and 6 cats and these make my house smell like a thunderstorm just went through. I first bought one of these 20 years ago when my daughter had Bronchiolitis and have used them ever since. These are difficult to find.
Most Ionic devices have a wire or a needle but these have 1 primary needle and 16 additional needles. You can actually see the ionized air at the tip of each needle. I have 4 dogs and 6 cats and these make my house smell like a thunderstorm just went through. I first bought one of these 20 years ago when my daughter had Bronchiolitis and have used them ever since. These are difficult to find.