The carbon filters help prevent odors from the compost bin and work for a period after which they must be replaced.

How often it is necessary to replace the carbon filters in your compost bin is individual as it also depends on where it is placed, but a rule of thumb is every 6-12 months.

This set contains 2 square and 2 round carbon filters - both a round and a square must be used when changing, and there are thus 2 replacements.

Fits all Eddingtons brand compost bins that use charcoal filters.

Does NOT fit in size for Typhoon brand compost bins.