It does work, but you are right, if there is a slight chance for confusion as to why they are where they are, there is that sweet moment where I turn off the buzzer and the memory of it all is already drifting away. I can name the alarms, and I sometimes put labels on them, but I also mostly use them for important stuff with clear locations, think boiler room in the Shining.

I figured out it helps to mix things up. Put them where they should go, but never in the same place exactly, otherwise it becomes somehow part of the pattern and is filtered out by whatever mechanism decides on what I get to perceive of reality today. That is true for all kinds of reminders btw., I add variety to try to stop my brain from getting used to it. Also, I never hesitate to do what I'm supposed to do. I did that in the past, and as I said, sometimes I feel everything slipping through my fingers in mere seconds, like sand, and it's gone. "Why am in this room? What was that thing I know to be really important that I'm supposed to be doing now?"

I am confident that with patience, you'll find out what works for you.