I bought these over a month ago when the sensor spots became too much to handle and I didn’t want to shop my camera off to be cleaned during covid. Who knows if I’d even have it back yet? But I was honestly worried about doing it myself and screwing it up.The reviews I read prior gave me the courage to consider doing it myself, and the lack of open local camera store options pushed me to break open a couple of swans and give it a whirl. I can happily report it was easy and 100% successful.I have a Sony a6000 with a crop sensor and these swabs were the perfect width. I had read the recommendations to put two drops directly into the end of one swab to clean. I had already air dusted and used the sensor vibration cleaning one last time to no avail, so I knew I was ready to go. I used one swab(wet) and made a pass each way across the sensor(2 in total). Then I repeated the motions with a dry swab. That was it. First time, only needed one time. Whew!If I can add my blue sky test to this review I will so you can see for yourself. As clean as day one and, at least until next time, no more cleaning up spots in post! Love it.