In circumstances when you expect a product's entire stock to be sold before replenishment, you can enable warehouses to automatically remove items when they are sold out.
This is especially useful for seasonal or promotional items.
1. Visit Inventory > Warehouses tab and select the warehouse you would like to enable this option for.
2. Select Edit.
3. Toggle the checkbox "Remove items when inventory decreases to 0".
Tip: This will take affect on all items within the warehouse. If you only want certain items to be removed from your warehouses when they sell out, you can manage them independently by creating a new warehouse for seasonal, promotional, etc. items only.