If you travel in a motorhome, camper, or travel trailers (or maybe even at your regular home as well), this might help. At night, condensation builds up on our windows. My easy clean fix is to use a squeegee to run the water down the window onto a reusable towel. Takes a few seconds to do each window. The plus side is you just hang the wet towel out/up to dry and do it all again the next day or time depending on the weather where your staying/living.