Colibri sachets create a cocoon of protective natural fragrances to keep wool, silk and other precious fabrics safe. Use in any enclosed space such as wardrobes, drawers and storage containers to freshen with a light, clean fragrance. Each sachet conains a blend of 100% botanical oils including lemongrass, Eucalyptus, Vetiver and Clove, and lasts for 4-6 months. For best results use all year round.