Vacuum powders are meant to scent and deodorize your vacuum cleaner during use. Designed with natural products and plants, they neutralize bad odors effectively. They can be used with bagless vacuum cleaner or bag. Their use is very simple: just suck the equivalent of a tablespoon of powder when the bag is new or the tray is empty.
Then you can normally use your vacuum cleaner. You can repeat the operation if necessary, but it is always more effective to deodorize and perfume when the bag/tray is empty