What is a disadvantage of using a one-step de-icing method?

The one-step de-icing method typically involves applying de-icing fluid directly to the surface to remove ice and snow. This method can be effective in many scenarios, but one notable disadvantage is related to the increased fluid expenditure when dealing with large deposits of ice or snow. When ice or snow buildup is substantial, it often requires more de-icing fluid to achieve the desired result, leading to higher costs and potential waste.

In contrast, other methods, such as a two-step process that uses a heated fluid or specific techniques to manage ice, might be more efficient in terms of fluid use, particularly under challenging weather conditions. The other choices highlight aspects like effectiveness, freezing point, and operational time, which may reflect advantages rather than disadvantages of the one-step method, emphasizing the distinctive characteristic of increased fluid expenditure as a notable downside.