Get your self a soft detailing brush and use a good apc. I use g101 diluted of course. As for it coming back I don't no of 1, where are you parking the car? Under a tree by any chance?
Get your self a soft detailing brush and use a good apc. I use g101 diluted of course. As for it coming back I don't no of 1, where are you parking the car? Under a tree by any chance?
A good APC (All Purpose Cleaner) mixd ten parts water to one part APC will remove it along with a brush as quoted. To stop it returning a good rubber protectant helps, but alas in the UK, damp weather is always your enemy.
If you have a jet wash that helps, but also if you foam the car, while the car is soaking in the foam is a good time to take a brush (detailing or paint brush, not a hard bristle nail brush!) and run it along the window seals etc
If you don't have either then just put the brush in your clean/soapy wash bucket and do the seals before your final rinse after washing the car