Replenish your Reed Diffuser with this Kakadu Plum Refill, ideal for bringing a pleasant and fragrant aroma to your living space. This refill easily fits into our existing reed diffusers for a simple, long-lasting solution to bringing a signature scent of Pomegranate, Jasmine and Kakadu Plum to your home. Kakadu Plum Fragrance Reed Diffuser - Refill. Fragrance oils are poured in Australia using only the finest fragrances and ingredients.