This cleaning rods I got the whole again. Because I wanted to be careful, I have only a very moist and wiped made without pressure. Then I let the sensor to dry for 10 minutes and had almost all the streaks and almost all dust particles away. Then I took a second rod and with a little more pressure (such as the bar would be a Brillenputztuch roughly) wiped and again 10 minutes waiting. After that, everything was great. I'm excited.
The liquid can be applied easily by holding the open bottle on the corners of the cloth and each one filled shortly. There is more than ample detergent there.