A licensed esthetician, Mary had already spent years up to her elbows in essential oils and skincare. It wasn't until she was spritzing herself with some DEET-laden bug spray one summer evening that she realized there might be a more natural, organic way to outsmart all those mosquitoes. And as it turns out, there was. Her ingredients are super-secret, of course, but they're entirely natural and serve to mask carbon dioxide and skin odor — the stuff that draws in the mosquitoes. As a bonus, Mary's natural bug spray smells of lavender and citrus — nothin' like a citronella candle.