true, but it needs to be a true green light spectrum, not just a painted lens over a white light.From another thread ===> https://www.rollitup.org/bugs/433626-new-stuff-kills-spider-mites.html#post5757324
, I heard that Mighty Wash is excellent against spider mites. I also did some secondary checking and people seem to think it works well. You may wish to get a green flash/work light so you can do stuff during the "dark" period in your grow room. Plant's can't "see" green light.