Keep your home smelling fresh with the Litter Genie LitterLocker Refills. Each refill provides 6 metres of multi-layer film designed to effectively block odours, lasting up to 3 months for a single cat. Simplify your cat's litter box maintenance with this fast and easy solution. Product Summary: Litter Genie LitterLocker Refills, 3 pack, odour control, multi-layer film, long-lasting, easy cat litter disposal.