 So it gets rid of litter box odors, pet odors, smoke odors, frying odors, musty odors. It wipes out those odors. I've stayed in hotel rooms that had fireplaces in them, and the hotel used them in the room to get rid of the smoky odor. It just – they work. They really do work. I travel with one. I've got one in this hotel. Haven't had to use it. It's a great hotel, but I've used them in rental cars before, had to plug them into the USB outlet in the car to get rid of someone that smoked in the car.