All boxes look the same once you pack them. You need to mark them. It’s required if you hire professional movers (and we can help with that) and you really need to do that if you’re doing your own move, or you won’t know what goes where.
Use the right tool, a black permanent marker. Low price, and we will give you one free with every order over $150 (before taxes) if you simply ask for it in the comments.