6 Gross Reasons to Wash Your Hands More Often According to the CDC, dangerous germs such as salmonella and E. coli can enter your system through the daily use of your hands. Washing your hands after going to the bathroom isn’t enough, as 80 percent of all infections are transmitted by touch. Here are six places and things that contain an unsuspectingly gross amount of germs. 1. Door Handles 2. Kitchen Sponges 3. Office Desks 4. Subway Trains 5. Restaurants 6. Phones