ok not great.,
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This review is from: Digital SLR Camera Sensor Cleaning Pads with Eclipse - All Full Frame Sensors (Electronics)
I had some very nasty dust on my anti aliasing filter (which is still there). Cleaning with these did nothing but put lint on the filter with the next one being used to remove it. You will spend most of your time cleaning up after using them, which can be quite annoying. I much prefer speck grabbers (a dry method) but that relys on being able to see the dust.
Just don't expect that you can use these sparingly and have a clean filter. Ok for light dust but not much more.