Put one or more tablets in your windshield washer reservoir and add 2.5 liters of water per tablet.
It mixes without risk with any other windshield wiper, being effective up to a temperature of -5º C. In winter it is advisable to add antifreeze.
Simple to use and very fast dissolving.
Clearly cheaper than your traditional windshield wiper.
With a blister of 2 tablets in your glove compartment, you always have your windscreen wiper at your fingertips.