I made my own cleaning device. I took a 1/4th inch wooden dowel. cut a small piece of lens cleaning cloth and attached it to one end the dowel with a small piece of two way carpet tape. blow a little hot breath on the sensor and wipe it very lightly, But first use a blower to make sure there isn't anything in there that will cause scratches. So far it has worked every time that I have needed to clean the sensor.
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