I have just ordered this item:
REMOVED COMPETITOR LINK
I have never cleaned a PC with compressed air before, but I did take my lungs to it and even used a domestic vacuum cleaner, with no issues.
I am concerned about water or fluid from the aerosol hitting the components, and have been told I should only use the can upright. That won't be so bad, but can I at least bend the straw to get to items 90 degrees above or below?
I know about holding the fan still when blowing into it, btw.
Lastly, should I place the opened PC outside, or nearly outside? I've seen the dust that bursts forth from various YouTube videos when the PC is outdoors.