Same as all above and I would add an ESD safe brush. Regular paint brushes may seem very convenient to brush dust off because air alone doesn't remove every speck of every type of dust, there may not be enough air in the can to do a good job, or it may not reach every spot, specially if dust is above normal in your area... and combining brushing while blowing air does a thorough job.. but regular paint brushes can cause ESD specially if made of animal hair or synthetic materials.. vegetable fibers should be safer but an ESD safe brush would be the only type of brushing tool I would suggest using. Check out the examples.
Anti Static/ESD-Safe PCB Cleaning Tools/Brushes...