 You get them, they generate O3, ozone that spreads through your area where you fired up the Eden Pier thunderstorm, goes in the nooks and crannies and finds the odors and eliminates the odors. So I'm headed up to my favorite of one of my favorite happy places, Barsley Resort, in a couple of weeks. They, cottages have fireplaces in them and they run the Eden Pier thunderstorm if people have fired up the fireplaces to get rid of the smoky smell and they work.