Falcon Dust-Off Aersol Compressed (152a) Disposable Cleaning duster 4 count 10 oz. Contains a bitterant to help discourage inhalant abuse;Convenient 4 pack;Provides potent dust-removing power for practically any task.;Ideal for workstations, labs, repair benches, household use, on-location photography, etc.;100% Ozone safe Bitterant added to help discourage inhalant abuse