I’ll be honest, I usually forget to clean this!

English:Dispose of the fabric softener sheet: Once you’re done, simply toss the used fabric softener sheet in the trash. There’s no mess to clean, no need to rinse anything, and best of all, no cloud of dust filling the air.
Additional tips for maximum efficiency
Regular maintenance: While this tip makes cleaning easier, it’s still a good idea to give your vents a quick wipe down with a fabric softener sheet once a month. This regular maintenance will keep dust and allergens at bay and reduce the need for more intensive cleaning sessions.
Deep cleaning: If your vents are particularly dirty or haven’t been cleaned in a while, you may need to use a vacuum cleaner first to remove most of the dust before finishing with a fabric softener sheet. However, for most households, using the fabric softener sheet alone will be sufficient.
Use a long-handled tool: For vents in hard-to-reach places, like ceilings, secure the fabric softener sheet to a long-handled tool (like a Swiffer or broom) with a rubber band. This will help you clean high or out-of-reach vents without the need for a ladder.