Vent Visors / window deflectors -- group buy

[LilGeckos]

hi gang, question: how do these wind deflectors do through a car wash? do you have to run a rag between them and the window every time?

bigblue, you usually get some water drops left over after a car wash.
Excuse the dust it; it was car washed two days ago:



As you can see, dust will make the water drops stand out after drying.
Here is a picture of the back door:



A car wash will get most of the dirt out but not all.
Too busy lately for a "full clean & shine."