Start by confirming the dust: photograph a clear sky or plain bright surface at a small aperture like f/22 to make the spots easier to see.

If a blower didn’t work, the next step is usually proper wet sensor cleaning with the correct tools, not random household swabs or cloths. Community answers mention using sensor swabs with Pec Pads and Eclipse solution successfully. The key is to use products made for sensor cleaning and follow instructions carefully. With the right tools and technique, self-cleaning can be safe; with the wrong products or poor technique, you can smear oil or move debris around and make the problem worse.

A low-quality blower may also introduce more dust, so if you use one, choose a good filtered blower.

If you’re uncomfortable doing a wet clean yourself, a reputable camera shop is a sensible option. It costs more than DIY, but reduces the risk if you’re worried about damaging the camera.

In short: verify the spots, try a quality blower, then use proper sensor-cleaning supplies if needed—or have a good camera service shop handle it.