Nilodor is a concentrated odour neutraliser that attacks unwanted smells fast! It’s so powerful and effective only one drop is enough. Unlike other products that just mask malodours, Nilodor effectively neutralises malodours in seconds! Directions: Apply one drop near odour source. Do not shake bottle. Nilodor acts fastest when it is placed near incoming air currents e.g. window sill, door, air conditioner. As this is a concentrated odour neutraliser, you can choose to place a drop on a cotton ball or tissue and leave near odour source.