The big one at the bottom. Not the up where the hinge assembly attaches to the hood itself.
I would be hesitant to spray brake cleaner around. That can damage paint. I would get some plastic and cover the engine etc as much as you can, get some foaming engine degreaser from AutoZone or whatnot, and then hose the springs and all the hinge pivot points down. Let soak for a bit, and then rinse with a hose.
Of course if your engine bay is gnarly, maybe degrease it to i.e. leave the plastic cover off and make an afternoon of it.
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