ScienceAre toothbrush bacilli a hazard?To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoScience07/23/2021July 23, 2021Some toothbrushes can turn into bacteriological hazards after being used for a long time — and the microbes involved can be traced straight back to the toilet bowl. Just how pervasive is this revolting problem?https://p.dw.com/p/3xnoRAdvertisement