It will keep spiders out of your house
While the scent of vanilla is pleasing to most (all?) human beings, it is almost lethal for spiders. The eight-legged creatures hate the scent of essential oils, citrus, and vanilla, so pest control experts suggest adding vanilla extract to a solution of dish soap, alcohol, vinegar, and oils to thwart these unwanted creatures from lingering in your home. Vanilla can also be used to mask many strong industrial odors, including heavy ones like rubber tires, paint, and cleaning products. And if your house or apartment has an unfortunate stank of any kind, add a couple capfuls of vanilla extract to a mug, stick it in the oven at 300 degrees for an hour and the offending odor will vanish, replaced by the heavenly smell of warm vanilla.