Originally posted by bymy141 Try a rocket blower.
Actually I am not a fan of these blowers. Firstly, they don't reliably remove the dust and secondly if they do they just re-locate it somewhere else into the mirror box when it will re-appear again on your sensor the following week by virtue of turbulence created by the mirror slap and and pumping zoom lenses.
But here is another reason why I don't like or use these blowers;
Consider this: With every pump action of the blower you blow out and suck in air. It is sort of a throughput of air. Now, the air sucked into the rubber chamber of the blower is the air available to it from the surrounding area. Is this air free of dust? No of course not.
With regular use you will not be surprised to learn that actually quite a bit of dust can/will accumulate inside the rubber ball, and you know what happens when you blow the sensor with it. (I do have personal experience of this). It has also be known that the rubber of some blowers start to deteriorate over time and particles of rubber when you blow find themselves deposited on the sensor. (A really serious problem). Imagine where all these rubber particles will go inside your camera. This is not a made up story to scare you, it has actually taken place. It only needs to happen once but it will put you off using these little buggers for life. But if you absolutely need to buy a blower make sure it is not made from rubber. Also you cannot be sure that the manufacturer (mainly Chinese these days) have done the right thing and provide you with a totally clean blower. Some use talcum powder, and even the tiniest amount of that is deadly. I have heard of people who have washed out their brand new blower before use because they had detected dust being blown out from it. So all in all, I find Blowers less than ideal for this job. My opinion based on personal experience.
These are not made up stories to scare you, if you search for this on this forum I bet you find references to this.
Finally, sensor cleaning will be with you from now on as long as you will use DSLRs, it is just a fact of DSLR live and changing lenses. Better get used to it and hone your skills in dealing with it. (Learn how to clean the sensor because sending it in will send you broke).
Check this out and go to post #10
https://www.pentaxforums.com/forums/general-technical-troubleshooting/154197-...-x-sensor.html
Greetings
P.S. I have just returned from a visit to Chicago, I liked it, very nice city. I also enjoyed the guided walking tour hosted by the architectural society. Great stuff, and all those lovely building. My favorite was the Rookery.