You might think twice about rinsing your veggies in a sink-full of water after knowing that nearly half of the sinks in U.S. homes hold coliform. And research has shown that many drains are trapping more than just food — it's not unusual to find traces of Salmonella and Listeria, bacteria that cause food poisoning. Sanitize your sink periodically with a bleach-water solution (one cap of bleach to one gallon of water).
