DIY Windscreen Washer: Save Money With 3 Household Ingredients
Make your own windscreen washer fluid at home

As freezing temperatures grip the UK, maintaining clear visibility while driving becomes more crucial than ever. A simple, cost-effective solution for keeping your windscreen clean has gone viral, offering motorists a way to bypass rising shop prices.

The Three-Ingredient Winter Solution

Meteorologist Kelly Sonnenburg from the Weather Network has demonstrated a remarkably straightforward method for creating your own windscreen washer fluid. This DIY approach requires only three common household ingredients that most people already own.

The recipe, shared on 29th November 2025, calls for precisely four cups (946ml) of water, half a cup (118ml) of rubbing alcohol, and a single teaspoon of washing-up liquid. These components are mixed together in a bowl before being transferred to your vehicle's washer fluid container.

Why This Homemade Mix Works

Each ingredient in this DIY formula serves a specific purpose essential for winter driving conditions. The rubbing alcohol acts as an antifreeze agent, preventing the mixture from solidifying in sub-zero temperatures.

Meanwhile, the combination of water and washing-up liquid creates an effective cleaning solution that can tackle road grime, salt spray, and other contaminants that accumulate on windscreens during colder months. For those who prefer the familiar appearance of commercial products, Kelly mentioned that adding a few drops of blue food colouring is optional.

"Fill up an empty container, and it looks like the real thing," she confirmed during her demonstration. "It cleans like the real thing, too."

Public Reaction and Important Considerations

The DIY tip has generated significant attention online, with many viewers expressing enthusiasm for the potential savings. "Thanks this will help me a lot. It's so expensive now," commented one supporter of the method.

However, some have voiced concerns about the mixture's effectiveness in extreme cold. One commenter noted that while it might work in moderately cold conditions, they were sceptical about its performance in areas where temperatures plummet to -20°C.

This homemade solution presents a practical alternative for British drivers seeking to maintain clear visibility without straining their budgets, particularly during periods of harsh winter weather when windscreen washer fluid is used most frequently.