Top critical review
High risk of cover glass damage
on 9 November 2017
I've used these swabs twice, and I've scratched two different sensors' cover glass (though unlike others, I never had smearing issues). The first time I blamed my technique, but the second time it happened (today) I noticed that three of the four swabs in this pack had slightly raised and, more importantly, quite sharp corners. In fact, I took a used swab, and was able to scratch a visible line on my arm with its corner. Now, it seems to me that there are two possibilities: either the swabs themselves are sharp enough, at the corners, to scratch the sensor (which would be utterly unforgivable), or there's a good chance that dust stuck to the sensor is going to be hard enough to scratch the sensor on removal (in which case, you're probably better off with the dust). Either way, in my usage, these swabs have only ever replaced a potentially fixable problem with a similarly-sized permanent problem. Can't recommend at all.