Wombaroo Wombat Milk 0.4 5kg. Wombat Milk Replacer 0.4 is a nutritionally balanced milk substitute for wombat joeys with between 40% – 60% of their pouch life completed. Joeys at this stage have darkening skin to fine fur, eyes nearly opened to just opened, ears erect. Completely confined to the pouch, but may poke head out occasionally. Faeces toothpaste consistency. Key Features: Specifically formulated to match the composition of mid lactation wombat milk. Moderate energy milk, with a balance of carbohydrate & fat content. Protein high in sulphur-containing amino acids (cysteine & methionine) for the onset of hair growth.