Make sure it reaches deep into the cuts.
Add cloves if desired by pressing them into the pulp.
Place the lemons on a small plate.
This will catch any juice.
Set the plate in a room with light airflow.
Near a window works well.
Replace every 3 to 5 days.
Or sooner if the scent fades.
Variations
Peppermint Infusion
Add a few drops of peppermint oil to the salt.
Eucalyptus Blend
Insert fresh eucalyptus leaves between the cuts.