Keep your kitchen fresh and free from odor with a odor adsorbing filter in your compost bin. - Each pack has a set of 4 filters for a years supply of filters for your compost bin - Made from cellulose with activated carbon to adsorb odours - Replace approximately every 3 months for ongoing odour control - Now Designs is a collection of kitchen and dining essentials designed to celebrate and support the joy of living well. Reimagined classics and an abundance of colors and tones to appeal to every taste. - 6.8x6.8x0.12inch, made to fit Danica Imports' compost bins (sold separately).