Researchers from Novel York University have developed a new crystal form of deltamethrin, a typical insecticide used to combat malaria, by a straightforward heating and cooling procedure. This insecticide is up to 12 times more potent against mosquitoes than the previous form. In light of mosquitoes developing an increasing resistance to insecticides, the findings, which were published in the journal Proceedings of the National Academy of Sciences (PNAS), may offer a much-needed and reasonably priced alternative. “The use of more active crystal forms of insecticides is a simple and powerful strategy for improving commercially available compounds for malaria control, circumventing