Let me start by saying, as someone who travels frequently and stays in Airbnbs, this little gadget caught my attention immediately. The idea of having an alarm that doubles as a door stopper sounded like genius-level security for solo travelers like me.

The first thing I noticed was how incredibly easy it is to use. You literally just wedge it under the door - no tools, no installation headaches. I tested it in three different hotel rooms with varying door gaps, and it fit perfectly every time. The alarm is LOUD (seriously, my ears are still ringing), which is exactly what you want in an emergency.

Where this product really shines is for parents. A fellow traveler mentioned using it for her autistic daughter who tends to wander - brilliant! I can totally see how this would give peace of mind when staying in unfamiliar places.

Now for the not-so-great parts... The build quality feels a bit cheap. Mine arrived with slightly loose components, though they haven't affected functionality yet after two months of use. Also, the alarm mechanism seems hit-or-miss based on reviews - some units stop working after few days while others last years.

Final verdict? For $20, it's worth trying if you travel often or want extra security at home. Just don't expect military-grade durability. It's more like having a very loud watchdog that fits in your purse!