Scented oil refill continuously fills room with a clean linen scent that delivers the classic smells of line-dried laundry. Long-lasting scent provides a continuous fragrance for up to 30 days. See-through bottle lets you quickly see the current level to prevent unexpected depletion. Scented oil is perfect for offices, busy bathrooms, kitchens and more. Refill is designed for Glade PlugIns scented oil warmers (sold separately).