Meltable Products
FBA accepts products that are subject to melting between October 15th and April 30th of each calendar year - so outside of this time period (May 1st to October 14th), the meltable policy is not applicable for any products which would otherwise be meltable.
However, the Meltable alert in a SAS listing is not dynamic, so it will always show regardless of the time of year - you would just need to bear the time period for meltable inventory in mind - it will show in the Quick Info and Alerts panels: