Aroma stone for fragrance of sleeping areas, workplaces, cars, toilets, storage rooms and wardrobes Fragrance radius: approximately 1 metre Exclusive fragrance stone in a black tin for closing Recommended use: for the first application 10-15 drops* on the root. aroma stone. Then depending on the needs and intensity of the essential oil, 4-8 drops. *Please adjust the dosage to your personal feeling and the intensity of the essential oil. Please always use high-quality and natural essential oils. Note for cleaning: To make a fragrance stone look like new, put 1 tablespoon of citric acid in a bowl, approx. Add 200 ml of hot (not boiling) water. Place the fragrance stone in for 10 minutes, then rinse thoroughly under running water. This removes most stains and opens the pores of the stone, so that the next fragrance that is applied can be released well into the room air.