Dust-Off 10 oz Compressed Gas Duster – Link

Amazon has this currently marked down to only $11.98.

• Larger-size disposable can gives you a great value
• Ideal for workstations, labs, repair benches, household use, on-location photography, etc.
• Provides potent dust-removing power for practically any task
• 100% ozone safe
• Includes extension tube to get in hard to reach places
• Removes dust, lint and other contaminants from hard to reach areas
• Ideal for cleaning CPUs, keyboards, computer mice, and workstations. Also great for cleaning items around the home including collectibles, figurines, window blinds and ceiling fans
• Contains a bitterant to discourage inhalant abuse