Those sparkling glasses hanging out by the sink ... chances are they haven’t left the room in ages. It seems hotel mugs and glasses are some of the dirtiest and most dangerous items in the room. Why? Because as hidden camera after hidden camera has proven, glasses are too often cleaned in the bathroom sink (with no soap), dried with a towel, and then replaced — sometimes with those pretty little paper tops that make you think they’ve been appropriately sanitised when they haven’t.

And it gets worse. Studies show that a common hotel practice is cleaning glasses with toxic chemicals like window cleaner, or while wearing the same gloves worn while scrubbing the toilets moments before. On top of that, the towels used to the dry the glasses are often dirty.

Some maids have been caught on hidden camera cleaning glasses with used towels in the bathroom, or the same towels used to dry surfaces like the toilet seat. Oh, and a hotel employee confessed on Whisper that some pee in the glasses, dry them, and set them back on the counter.