I know the headline sounds extreme. I thought so too, the first time I read it. But this has been replicated in multiple studies, and once you know it, you can't unknow it.
A 2019 study by the insurance company Initial Washroom Hygiene found that the average tablet screen carries around 600 units of Staphylococcus aureus per swab — compared to around 220 on a toilet seat. Touchscreen devices used by children regularly tested far higher than those used only by adults. The reason is straightforward: children touch everything, then touch their screens, and rarely wash their hands before doing so.
I thought about this properly for the first time when I saw my youngest lick her finger and use it to swipe through a cartoon on her tablet. No judgment — she was four. But I realised I genuinely had no idea when that screen had last been cleaned. Or how.
Most parents clean the obvious things: chopping boards, door handles, the bathroom. Screens? Not so much. They're fragile, we're not sure what to use, and they don't look dirty. That last point is actually part of the problem — a visibly clean screen can be carrying enormous amounts of bacteria and viral particles.
Research published in the journal Pediatrics has noted that shared touchscreen devices in homes with children are among the most bacterially contaminated surfaces in the average household — ranking alongside kitchen sponges and light switches.
What made this particularly relevant to me was that my son had been going through a phase of picking up every cold and stomach bug going. We'd done everything — hand washing, vitamins, extra sleep. We hadn't once thought about the screen he was pressing his face against to watch videos every evening.
The fix is simple once you know about it. A proper microfibre cloth with a gentle, screen-safe cleaning solution, used regularly. Not every week — every few days, especially if the kids are using the screen daily. It takes thirty seconds.
That's actually one of the reasons the screen cleaning kit on this site exists. I went looking for something that was effective, safe to use around kids (no harsh chemicals), and that my children could eventually do themselves as a habit. The spray-and-cloth routine is something even a six-year-old can manage with a little guidance.
Clean the screens. Genuinely. It matters more than most of us think.