This option specifies a list of terms that should be removed from faceted navigation values.
This option applies to all facets, see
for setting a black list for a specific facet.
The value is a comma separated list of terms. Those terms will be removed from the values for the given facet. The matches are case-insensitive.
Because the list is comma-separated, blacklisting values that contain comma is not possible. To blacklist faceted navigation categories creating commas, a custom hook script is required.