With the Venta Geurset you get a set of 3 bottles in the house. The bottles contain all 3 fragrances of spring fresh. The liquid consists of a kind of paste with a content of 30 grams. The paste is suitable for humidifiers. If a humidifier does not have a separate scent compartment, then put your pasta in the water. You only need a little bit for a delicious fragrance.