It is an interesting concept but I have to wonder about it having water solvent which might not be very effective on oil if there is any on the AA filter. If the film encountered oil or non-water soluble dirt it might not capture that. Luckily, since it is water based, applying a thin coat of distilled water on the spots before trying again to apply the film fluid might get those tough spots. If it was oil, another solvent will be needed, like alcohol. The possible advantage of this system is that is allows a thorough blowing out of the D600 body without addition dust falling back onto the film covered sensor. It could be the solution to what some have been doing, just moving the dust around that is already inside the camera. Without the sensor being covered, dust is likely to randomly fall back onto the sensor for some time until all the retained dust has fallen and stayed on the sensor eventually after each cleaning removes the portion that got on the sensor. This film method would allow a better blowing out which appears to be needed in some of these cases.