I have talked in past post, about the effectiveness of any deicing chemical being based on four factors:
1) Surface temperature
2) Application Rate
3) Moisture, and
4) Beginning Concentration of the product.
Like they say a picture is worth a thousand words. Below is a picture of a street in the City of Warsaw, Indiana. Lanes left of median had bare wheel tracks from rock salt and BOOST tracked by vehicles from US-30, that had been treated by INDOT. Lanes on right side of median was hard pack snow and ice treated with rock salt and beet juice by City of Warsaw. Temp was +4F.
Carbohydrates can help lower the freeze point of a liquid, (salt brine) but it will not melt ice or snow. During winter events with temperatures in the single digits or lower, you need that extra BOOST* to get you to bare pavement and keep traffic moving. BOOST* has 32% Calcium Chloride to burn through or prevent the bond of pack ice and snow. Contact your local Great Lakes Chloride Representative to get the best liquid DeIcer on the market into your maintenance program.