A bulb blower and a Zerostat works for me 99% of the time. For stubborn dust, a clean microfiber cloth used carefully does the trick. I worked in a darkroom with a compressor and trigger nozzles for cleaning, but never had to, nor wanted to, use them.
The most important things are to keep things clean when processing and drying your film, store your negatives in a dust-free environment and to have your enlarging environment clean and dust-free. I have filtered air into my darkroom and have an air filter inside that runs for some hours before I print. Still there's dust, but I manage to get things clean enough without compressed air.
And, I'm pretty good at spotting and etching for those inevitable times when something shows up on the print despite the most careful cleaning.
Best,
Doremus
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