Over time, especially if they are in a hot location, the adhesive these come with will fall off.

The adhesive on the back is not that good.

Adhesive actually seems very strong

love these little alarms, great to place on windows and doors... needs a better adhesive but the alarm it self is small but loud

The only complaint I have is that they don't stick well; this surprised me because the adhesive seems strong enough and I made sure the surfaces were clean and dry.

The adhesive on these doesn't stick very well.

The adhesive actually fails on adhesive/backing foam interface so the unit that houses batteries and alarm falls off leaving adhesive on the window frame

they work well, however, they fall off due to poor adhesive.

Horrible adhesive only stuck on for a week

Until the sticky adhesive fails

Great product, I give it three stars because it needs a stronger adhesive to keep it stick to wherever you put it on to.

These work great on windows & doors, a better adhesive on the pads would give it 5 stars, inexpensive security

I will try to find a better adhesive to make it work.

The adhesive is basic, and easy to use

3 of the 4 alarms I received fell off because the adhesive wasn't strong enough

Loud, but terrible adhesive

The only issue I have with the product is the adhesive on it

ONLY IF the adhesive wasn't so weak

They are nice and loud but the adhesive is not good

The adhesive seems to be pretty solid, as it hasn't fallen off or anything

That would not have bothered me if they worked as they were supposed to work

They have given me such a great sense of security, if even just to let you know there is a potential breech from an intruder to buy you time to act as well as

Couldn’t get them to work as

It works on our sliding doors and another door with a little bit of a gap, as they don’t alarm until they

Not quite as loud as I