Do not work.

They seem like they work but when my kid pulls on them hard enough they just pop open. We've used a hair dryer to pull them off and re-position with the same results. We installed them before he could open cupboards so we didn't realise they were ineffective untill he really started exploring. We used them in two homes (ours and Grandma's) and on multiple cupboard/drawer styles. They just don't work.

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