I bought this for cleaning the dust out of my computer and it worked great for that. It was faster and more effective than the last time when I used disposable canned air. It might seem like a big investment up front but in the long run this product is more economical than buying disposable cans of air over and over. It also cleaned the dust out of the space heater, the air purifier, and the window fans I bought at Target. This duster has already paid for itself.