Join our community of Solution Seekers!

Family Health and Wellness Guide

Surfaces Where Germs Lurk

Little hands touch everything, from faucets to fistfuls of playground sand in a day. What's the germiest spot?

By Elizabeth Schatz Passarella
Bathroom sinkMikkel Vang

These numbers represent colony-forming units (CFUs) per square inch. A CFU is a measurement of microbial organisms. The surfaces tested in our study contained everyday bacteria―most of which are not harmful to healthy people―and no traces of serious germs, like E. coli.

Store shopping cart: 2
Restaurant-restroom door handle: 4
Children’s library book: 7
Stuffed toy in a doctor’s office: 8
School-desk surface: 12
School computer mouse: 23
Store floor: 33
Public-park swing: 59
Restaurant tray: 204
School musical instrument: 262
Video-game controller in an arcade: 551
Public-park sandbox: 7,440
Classroom faucet handle: 32,000
Cafeteria water-fountain spigot: 62,000

Research was performed by NSF International Swab Testing, with thanks to Greta Houlahan and Robin Bechanko.

Read More About:Kids & Parenting

Related Content

Illustration of chickens sleeping

9 Ways to Get the Kids to Bed 

You’re ready to hit the hay; your child is anything but. What to do? Experts share advice on how to get your kids to sleep at night.  

What do you think about this article? Share your own solutions and ideas

View Earlier Comments

Quick Tip

Illustration of suitcases

Packing for a family vacation? Travel versions of favorite games won’t crowd suitcases, and playing them will keep kids from begging to watch TV at night. Get more tips.