VOC’s are a leading contributor to global warming, ozone depletion, smog, and indoor air toxins/pollution in homes, schools and businesses. Ammonia, alcohols and other VOC’s that are found in almost every “green” and “non-green” cleaning chemicals are a major contributor to indoor air pollution which is a leading cause for “sick home” syndrome. Yes, even other green glass cleaners are contributing to ozone depletion and global warming. This is because green glass cleaners that aren’t VOC free are just as toxic and harmful to the ozone layer as most non-green glass cleaners because they contain VOC’s. See EPA and California CARB for more information on VOC’s contributing to global warming, ozone depletion and indoor air contamination.