The aviation stuff has holdover time in the spec. Departing Chicago one snowing afternoon, we got the fluid applied at the gate, then joined the conga line to the departure end. Considerable snow accumulated on the wings.
On takeoff the whole mess slid off like a blanket.
If you are flying in such conditions, you want that stuff
The more common scenario is frost on a nice day with no precip. Automotive windshield washer fluid will do the job. Just remember that all residue must be removed. Now that you have a perfectly clean wing it will fly.
Laboriously scraping frost between the rivet lines takes a looong time and will likely leave you with a subpar wing and a low level tour of the surrounding area until you get some more airspeed
