While looking for advice on the Internet I ran across a sensor cleaning device which consists of a little square of a gel-type product at the end of a plastic rod. I discovered it through a UTube video about cleaning camera sensors. It's featured on a site called photographylife.com, where it sells for about $44. Amazon seems to have an identical product supplied under the Foga brand (a Chinese photo product supplier) for a fraction of that price. The gel square is sticky, but supposedly doesn't leave a residue. It comes with paper treated with something that is more sticky than the gel and removes the dust. I've ordered one, but haven't decided whether to use it on my camera. I've never cleaned a sensor before and am a little intimidated. Anyone tried this product out yet?