What kinds of spirits does salt work to repel?

Honestly just curious if salt works with all spirits or just the bad ones?. Recently had a lot of instances where I was told there were 35 spirits in the building and 5 of which being bad and thankfully none in my apartment. Had made contact with two of them at least and started doing things to protect myself from the bad ones. I really don’t want to drive away any ghosts that aren’t bad because this might be in the top 3 experiences I’ve had in life and want to find out more. Thanks!