 Oh, wow. Those test subjects were spreading bacteria all over everything. Now, this is a fact that most people don't know, but this next fact, very crucial for us. Certain bacteria can live on surfaces for like 72 hours. Three days. Think about it. You're making dinner. You've touched chicken, touched your spice containers without washing your hands, and then in the morning you're cooking eggs and you want to use the same spice in your eggs.