If you are looking for an alternative to the blue washer fluid you buy at gas stores, then check your fridge.
Vinegar can be a solution to cleaning your windshield; just add three parts water to dilute its acidity and protect your vehicle's paint and mechanical components.
Vinegar is a more natural solution and is better for the environment when needing to clean the dirt and debris off of your windshield. Every bit counts.
Will you give vinegar a try as your windshield wiper fluid?