Maintenance / cleaning sawdust off screws

I’m going to oil the machine today, but I’d like to clean the screws as well. Is there a best way to get the sawdust off the screws before I add more oil?

I first vacuum then use compressed air to blow everything else off as much as possible. If there is a build-up on the oil port screws, you might try a tooth brush (hopefully not the one still in use though) before removing them.