Guys, save your money. I've found a budget method that matches the strength of the Hurricane Canless Air System. Sure, it's not free. But, if you're clever you could get it for pennies. All you need to do is go to a fast food place nearest your house. Obtain a straw. Once you have a straw. Practice blowing through it. Not only is it an infinite source of air. But, it's actually stronger and more effective at clearing debris.
Alex00322...you also risk blowing moisture onto what your dusting using your method. If you're not dusting sensitive electronics your method would be ok, but otherwise use your method at a risk.