The multi-layer film technology in the cassette provides effective odour-barrier, for a more fragrant home. All nappies in the nappy bin are safely contained & you’ll not have to touch or smell them ever again. As not all nappies are wrapped individually, the Angelcare Nappy Disposal System uses up to 4 times less plastic than other systems. A single cassette lasts on average up to 28 days! Please note that not all babies are the same & experiences may differ. All Angelcare cassettes are suitable for all Angelcare Nappy Disposal Systems & help to provide a convenient & hygienic way of disposing of dirty nappies. Remove it just like a normal bin liner (approximately once a week).