When you’re washing dishes, make sure the water temperature is at least lukewarm. If not, you risk leaving behind microorganisms that’ll make you sick. That’s according to food scientists from Ohio State University. They say, water that’s at least 75 degrees Fahrenheit will reduce bacteria to safe levels. Because if you leave behind food remnants, bacteria, like E.coli, can grow – and your family will blame your cooking for giving them food poisoning – instead of blaming whomever was on clean-up duty.