De-icer

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While sort of a joke, I believe you could probably fine tune a mixture of simple household (my household) products to achieve the results of the 1Z product.

Here's where I would start:

in a 32oz spray bottle: 10 oz. PROPYLENE glycol antifreeze (i.e. "safe", non toxic, not the EG stuff) 8 oz. of the cheapest, strongest hooch you can find (I have the 95% alcohol everclear) 12 oz. of distilled water 2 oz. of glycerin (available pretty easily)

You may have to adjust the alcohol/water ratios if you get a lower proof. ie if you get 80 proof, use no water and 20 oz of alcohol.

I'm guessing on the glycerin content but I think it's partly for lubrication. I bet you could replace it with a half oz or so of ONR.

It might be fun to try, cheap, and much less toxic than what's out there.