i just detailed an older dakota pickup,with a shell on it.the windows between the cab and topper were dirty,and my arm wouldnt fit. so i dug around and found a window washer,from a gas station,i got at a sale,i hade to remove the squege part of it to fit.then wraped a towel around it,secured with tye staps,washed the window.then secured a micro fiber towel on to finish cleaning. worked good. just a helpful idea for everyone.:xyxthumbs: