In my APS-C to clean the sensor was due now after 2 years of use and about 40,000 trips because about a dozen dust particles were seen at conditions relevant in the picture. I have long back and hergegrübelt for which cleaning I decide. Since a competitor for 4 rods and 1 ml of fluid and almost 20 euros to be called, which I find a bit brash (on the pharmaceutical industry complains everyone, but for the money you get almost vaccines), I have to decide this. The shipping was super fast. Beautiful would be however, if the set instead come in a cardboard wallet in a small reusable cardboard, such as the Amazon Frustration-Free Packaging, then you can also store the stuff that is permanently useful therein. The pruning of the mirror box was probably unnecessary, I'm not going to make at each sensor cleaning. The rods for I regard as a bonus. The actual cleaning of the sensor was easily, though 3 passes were needed, two grains of dust right at the edge of the sensor I first do not get caught. The stuff dries completely streak-free (probably methanol). Image monitoring showed perfect condition. The wrapping of the Sensor Wands was a little fiddly at first, but you quickly get the hang of. Since only one square centimeter is used in the middle of the disposable cloths, I collect them and then do with it, for example, my filter clean. The liquid should last forever. Overall, a very usable set at a realistic price.