After a year of intensive use my Nikon D600 has accumulated filth is quite a bit. The spots fall in general photography hardly, but at much blue sky and a small aperture a few interfering particles were present, but "remove scratches / blemishes" with Photoshop Elements (amateur program) could remove easily. Then considered Hab long back and forth, because I really wanted to have nen clean sensor again. I go to the photo dealer, I am on the safe side, however, 39 euros, to the journey and waiting time led me to look for alternatives. Hab then read on the net a lot and also on Youtube I found instructions that are very helpful. When my delivery came, I have made with a lot of respect to work. I have 3 of swabs used until the sensor was clean. Think I was too timid in the beginning. But the result is outstanding. Only a small Mini stain remained, which is as good as invisible. I would recommend the set and will buy it again. Will probably make do in future with 2 swabs per cleaning and that's perfectly fine, because in my D600 almost exclusively oily spots on the sensor occur. Dust can be blown out with nem blower. Top Product Dare !!!