Have the refill bottle bought for my home fragrance glass, along with new sticks. To a 150 ml glass of freshly refilled, is empty after a week (with 4 short wooden sticks). Is probably the high alcohol content of the fragrance oil. The sandalwood fragrance is pleasant, although me this Nachfüller be ineffective. So a half (refill) liters is so obviously depleted in a few weeks. Had scented oil from a different manufacturer, because a liter has kept to the 2 years.
