Transform your wide mouth Mason Jar into a compost bin! Ideal for having a small compost container on your countertop or tucker away in a cabinet. You won?t have to worry about any odor coming from the jar as this lid comes with 4 charcoal filters that trap any smell and a rubber gasket that ensures a tight seal on the jar. You can also get a replacement set of 8 filters to keep your kitchen smelling fresh all year long. Save money and be more sustainable by turning what would be waste into food for your plants and garden!