1. DIY: Cleaning The Vents:
Cleaning vents are of great importance as it is the part of the car where a lot of dust and germs accumulate that later cause a disturbance in the ventilation system of the car. It can be easily done by a shaving brush that is no longer in your use, and you are about to throw that into the trash.
You can just remove the dust off or wash it properly with a soapy solution of any detergent or cleaner. Move the shaving brush to and fro after dipping it in a soapy solution and remove the stubborn sticky dust. After the wash let it dry with a clean cloth.
You can make your vent cleaning brush from just form and Wood Clip.