We hire people to care for my mom 24/7 in her home and we want one of the bedrooms to be off-limits to them. We lock the door from inside and then use a little screwdriver to unlock it. It was simple, just feel a groove and turn counter-clockwise.
However, the last time my sister visited she had a hard time opening it and damaged the mechanism, and I had a very hard time opening it the last time I went. I thought I wouldn't be able to open it and have to spend the night on the sofa and then call someone in the morning to open it, but after trying for a few minutes I was eventually was able to open it.
So now since I could not reliably unlock it I left the door unlocked. I am more and more uneasy about it and am considering asking someone to lock it.
How would I unlock it next time I go? Would a locksmith be able to do that, and how much would that cost?