The Versele-Laga Prestige Premium Bird Sand is sterilised at a very high temperature. A shell sand with 50% oyster shells, other shells and enriched with minerals, it is a good source of minerals, encourages healthy digestion, bones and feathers. Versele-Laga Prestige Premium Bird Sand smells fresh, is dust-free and environmentally friendly. For optimum cleanliness change 1-2 per week. Please note: the 15kg product consists of 3 x 5kg bags.