Summary: My experience wasn't the greatest
Comment: Well, I am almost embarrased to report that my experience with the Arctic Butterfly 700 sensor brush wasn't all I thought it would be. The first thing I did was to read the instructions. I even went to their website to watch the video. After pumping myself up for the daunting task of performing open sensor surgery on my "baby" 30D, I went for it.
You could imagine the horror when, after two swipes, I could see visible smears on the shiny surface of the CMOS sensor. There must have been some oil on the brush fibers from the factory! My heart sank, and I began to seath with anger. At this point I was thouroughly ticked. I had to take my camera in to be professionally cleaned but the gipper was that I paid $70 bucks for this spinny brush to do nothing but make my sensor an oil-painting canvas.
Before sending a nasty e-mail to the company explaining how their product let me down, I decided to follow the instructions on cleaning the brush with ethanol and distilled water. "Hey" I thought, "give them the benefit of the doubt". Yeah, I was trying to save face for spending all that money on a spinny brush with "special fibers". Plus, I really wanted this product to work. It seemed like a dream after reading some reviews on various photo-sites.
OK, well, the moment of truth arrived and I had re-opened my camera's sensitive chest cavity for another adventure in tedious, nerve-racking surgery with the newly washed and dried arctic butterfly.
HHHuuuuuppppp, hold your breath! Here we go... Well, no smears this time and it actually made the sensor cleaner, BUT, there was still plenty of dust present after two swipes. I guess this product really does work, although not as magically well as some web sites would have you believe. At least not for me.
Have I learned any lessons? YES!! Live with dust!!!!! And if it gets too bad, take it to a camera shop and for 25 bucks they'll clean it right!
Miracle drug? NO. Product that works to some degree? SURE.