Kohler Quiet-Close C3-455 Homeowner's Manual page 13

Deodorizer
Block
Cover
Replacing the Deodorizer
NOTE: The deodorizer should be replaced every two years or when
the deodorizing performance decreases.
Remove the cover.
Carefully remove the deodorizer housing from the seat.
Remove the deodorizer block from the housing.
Insert the new deodorizer block in the housing.
Reinstall the housing into the seat.
Reinstall the cover.
Kohler Co.
Housing
13 1381632-5-A