Do not shake, keep upright. Remove top tap. Direct valve away from yourself. Pull trigger to clear. Operate in short blasts 2-4" from object. Uses: Compressed gas dusters are effective tools for removing dust and other contaminants from tiny crevices in keyboards, CPUs and other electronic devices. Misuse by deliberately concentrating and inhaling contents may be harmful or fatal. Contains a bitterant to help discourage inhalant abuse.