So changing the topic from rectal procedures back to airplanes....
A garden sprayer filled with RV antifreeze or deicing windshield washer fluid is a good, harmless thing to use for frost? Doesn't need to be diluted? Do you wipe it down after spraying, or just spray it and leave it?
What about the windscreen and other windows?
I would use the antifreeze rather than the washer fluid. The washer fluid is harsher in the aluminum when it soaks into the seams.