Your Keyboard
You probably type on your computer every day, so it’s no wonder that the thing is crawling with bacteria.
According to a 2018 study published in the International Journal of Environmental Research and Public Health, it may even be teeming with staphylococcus aureus, which can cause potentially-serious infections in humans.
So, make sure to get out any grime lurking between your keys with a computer duster, and give your keyboard a daily cleaning with an electronics-safe cleaner or rubbing alcohol, making sure not to saturate the cloth you’re applying it with.