Portable Travel Door Stop & Alarm

what a joke for $26!!!This item was advised as 'Effective on hard surfaces and carpet' when i ordered it.Well, it grips Berber carpet well, but it does not fit under some doors because it is too thick and will not stay put on smooth hard floors. On tile floors, this door stop slides along with the door as it opens. VERY BAD!!I seriously doubt it will work on hardwood floors, because the backing on the bottom is only Velcore. For $26, it's a very disappointing item.I would try $8 GE brand.

Works as advertised.

Very loud. I accidently set if off a couple times at a hotel. Luckily the alarm turns off after a few seconds.