Let me start by saying, if you have kids or pets who love to explore, this sliding door lock is a game-changer. I installed these on my patio doors, and the peace of mind is unreal. No more worrying about my toddler sneaking outside or the dog pushing the door open.

The adhesive is *strong*—like, 'I-tugged-hard-and-it-didn’t-budge' strong. But here’s the pro tip: clean your glass thoroughly before applying. Some negative reviews probably skipped this step. Once it’s on, it stays put.

Locking/unlocking is effortless for adults—just lift or press down with a finger—but impossible for little hands (or paws). The clear design is subtle; you barely notice it unless you’re looking for it. Perfect for keeping things sleek while adding security.

One minor gripe: the lock sits *slightly* thick against the frame. It hasn’t caused issues for me, but if your door fits super snug, measure first to avoid friction.

For under $10? Worth every penny. I’ve tried pricier locks that failed miserably. These just work. 10/10 for functionality, ease of use, and toddler/pet-proofing magic.