You can spray the freshener in all corners of the room. But before doing so, make sure the room is clean and there are no pets or garbage or any other source of the smell in the room. Once the room is clean, spray the freshener in all parts of the room and open the doors and windows of the room to let the air flow freely. If needed, you can also turn on the fan to let air circulate in the room free. Later you can leave some scented candles in the room to enjoy a good mood and smell.