Thanks for the urea tip, but it primarily works best at or around freezing
temps, it's pretty ineffective much below 20 degrees, which here in
Wisconsin is most of the winter months.

I was able to find out that the potassium and sodium acetate products are
corrosive and typically mixed with an anti-corrosive agent so they are able
to be used around airports.

Here's a quote from the USPS Chemical Engineer (why would the post office
need a chemical engineer??!)
Urea is also a common fertilizer nutrient. In its pure form, urea is not
corrosive making it a good choice for use around airplanes. Urea must meet
strict contamination regulations before being approved to use at airports.
However, most of the urea sold for melting ice is considered an agricultural
grade is not suitable for use in corrosion sensitive environments.
This also goes to explain why urea fertilizer eats the SH*T out of anything
steel here on the farm, everything we put urea in is either plastic,
stainless steel, or wood. I don't know how it effects aluminum. Obviously
airports are getting a purer form than the 46-0-0 that we use. Good to know
so pilots don't just run down to their local co-op for some 46-0-0. Some
fertilizer grades are also pelletized or coated with sulphur to make it
easier to handle during humid weather. (Urea draws moisture from the air and
turns to mush)

The reason grass likes it is because it's main ingredient is Nitrogen and it
contains no chlorides like salts do.

Jim