Our products mainly designed for promotional use and they will last 1 week or more depending external factors and fragrance you choose. Some perfumes will perform weak/light, some strong, some will last longer than others. If you remove packaging gradually you could get up to 2 weeks life or more from 2ml perfume on each fresheners we will apply individually. These are promotional use products and this is longest life for promotional use fresheners. We will apply 2ml perfume to each freshener, compare this to competitors some apply only 1 ml. You can also increase this to 3ml at £50 extra cost per 1,000 fresheners.