<p>David, since you haven't gotten a response from a first hand user of the Sensor Gel Sticks yet, I thought I'd chime in. I too was frustrated with sensor swabs and was never able to get the sensor truly clean. Out of desperation I ordered a SGS from Photographylife and tried it first on my D-300. It got every speck of dust off the sensor and left absolutely no residue on it. I had some particularly sticky spots on my D-810 that could not be blown off so I used the SGS on it as well. There were one or two instances where it left a slight amount of residue at the edge of the sticky pad but subsequent applications left the sensor completely clean. I tested the before and after cleanliness by shooting a white background and cranking up the contrast in post as well as applying a "Dust" tone curve in post. I know there is a bit of hesitation to use something sticky on your sensor but I've had nothing but positive experiences and will continue to use them.</p>
