Private Message to Professor Dolohov

Sir, I was wondering whether there are any spells a person could use to keep someone else from casting a blood lock on an object. For instance, if I had something that I wouldn't want to lock, but it would be really annoying if someone else came along and charmed it closed. Is there anything I could do to keep them from locking it to themselves?

Sorry if that sounds like making up stuff to worry about. Only, I've got brothers who do things like that all the time because they think it's a laugh. I could totally see them locking me out of my room that way. Because you could do, couldn't you? With a wooden door and doorframe.

So, yeah. Sorry to bother you. Just, it was interesting today, and got me thinking, I guess.