Use your hose on the outdoor unit. I use compressed air on the indoor ones, like OP.
I mean, I guess that would work, but why wouldn't you use a vacuum cleaner? I mean, if you're hitting it with compressed air, now all the dust is all over the room.
I think that conscription is fine where there's a military need for it.
I wouldn't say "it's the right decision" across the board, though.
Kind of like asking "What are your feelings on amphibious assaults? Good or bad?"
I mean, they're a tool. There's a time and place for them.
I don't think that conscription has some sort of intrinsic social benefits, which some people seem to. Nor do I think that it is morally-objectionable, which some others seem to.