My mom checked into her hotel and noticed a tiny blue dot sticker on the door. She’s freaking out—what does a blue dot mean?.

First: What DOES a Blue Dot Sticker Usually Mean?
In most legitimate cases, a small colored sticker on a hotel door is simply an internal housekeeping or maintenance marker. Hotels use stickers, dots, and tags for dozens of reasons.

Here are the most common, benign explanations:

1. Housekeeping Rotation or Deep-Clean Schedule
Hotels often tag certain rooms during:

quarterly deep cleaning

carpet shampoo rotations

mattress replacement weeks

inspections