How many of you hand wash your car at home vs taking it to a car wash and how often do you wash it?

Also, how often do you give the interior a thorough cleaning? I gave the interior of my car a thorough cleaning over the weekend and it was gross! I literally had to brush my seats to get all the hair out of them, then a vacuum and shampooing. It's probably been close to six months since I gave it a good cleaning but I'm gonna try to do it every month or so, because my baby looks beautiful! I take her through the carwash every week, so the outside always looks nice, it's just the inside that needs a little more TLC.

How many of you hand wash your car at home vs taking it to a car wash and how often do you wash it?
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