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Herbicide applicators don't just need to pay attention to air temperature, however.

Professional gardeners and certified applicators who work in agriculture are at an advantage with chemicals, though, knowing which “cide” is the right one and when and where exactly to apply them.

Under EPA guidelines, only certified applicators wearing personal protective equipment are allowed to use the chemical.

Dale Sandler, senior author of the 2020 study, said the researchers observed licensed pesticide applicators and their spouses from Iowa and North Carolina over the course of several years.

As readers twist open their liner applicator, they’ll be reminded of the Wodaabe men who wear kohl to enhance their appearance and attract a partner in a ritual ceremony.