Quote Originally Posted by photoman66
there are lens cleaning solutions available in the market. You can try them or just take a tissue and clean the sensor with it.
I would not use anything but the stuff recommended by the manufacturer for the specific camera:

- there are several sizes of sensor out there. A swab for Nikon does not fit Canon
- there are at least two varieties of sensor-cleaning fluids, which I believe are alcohol-based. Some sensors have an anti-alias filter, some don't, some have anti-static stuff deposited on them, some don't
- I would not use lens cleaning solution which is basically detergent (for washing dishes)