There are many tools and products available for dusting. Using a micro fiber cloth will help you grab more dust and use less cleaning products in the process.
Micro fiber clothes can get a little expensive. Buy them in the Wal Mart automotive section for the best value.
Micro fiber clothes should be washed without fabric softener and dried without a dryer sheet.
To clean those hard to reach places Swiffer makes a kit with a cleaning surface that grabs dirt and an extendable handle. These can even be used to clean the blades of ceiling fans and tops of bookcases. They are disposable. This option costs more than buying micro fiber clothes but it's a tool that works well for certain jobs.