A new study found germs spread whether the toilet lid is up or down. ... "You really have to make sure you always clean the toilet seat and other areas in the restroom," Gerba said.

A toilet seat with the lid closed Screenshot 2025 05 28 at 2.29.08 PM Man Always Puts The Toilet Seat Lid Down Before Flushing, But His Mom And Stepfather Think Its Unnecessary ...

The home toilet was a standard siphonic toilet with a tank and lid in a private residence; there was no gap on the center of the seat. Toilet bowls were seeded with MS2 and flushed.

She also recommends putting the toilet seat lid down before flushing if there is one available, because flushing can cause particles from the toilet to become airborne. At home, be sure to keep ...

However, the main contamination was on the bottom of the toilet seat with high-dose MS2, with the lid top and bottom remaining at low contamination levels in either position.

The good news? Even though it’s (really, really) gross, forgetting to put down the toilet seat when you flush likely won’t result in sickness. "The chances of getting an infection from toilet ...

Keep your toilet lid closed when you flush - that's the advice being pushed by health experts in their continuing fight of the Covid-19 pandemic.