Bacto
So tiny you can only see him under a microscope, but he loves to make himself noticed. His idea of fun is finding places that are neither clean nor ventilated.
Hi! I am Bacto!
Think you can beat me? Ask me anything about dirty air.
He is so tiny that no one can see him without a microscope, but he loves to make himself noticed. His greatest idea of fun is finding places that are not clean or ventilated.
Meet more of the crew
Mitezilla
A furry, invisible little critter that lives in mattresses, pillows and stuffed animals. H…
Learn how to beat it
Every air villain has a weakness: open windows, cleaning and good habits. Videos, stories and activities show the way.