I'm always on the look-out for a green windshield cleaning liquid. I have experimented and mixed my own, but it's not very convenient and I go through a lot of it quickly. I would like to have a green concentrate that I can add to the gallon bottle or pour right into the cleaner reservoir then add water. Another handy format would be a tablet that I could drop into a gallon bottle of water or drop into the cleaner reservoir then add the water. I would like to have ingredients that are environmentally safe because when I clean my windshield, the liquid is dispersed into the atmosphere, probably lands on other vehicles, and ends up on the ground and into our watershed. Thank you for considering my Green Idea!