Advice on getting rid of attached spirits

I made this Ouija board on the bottom of drawer when I was younger. It’s been a while since its last session. Per me being naive and not understanding how to properly use the Ouija board- left an “portal” open. As the years went on, the energy became more intense. Now there are spirits trapped inside my bathroom.

A day or so back, I took the Ouija board outside, adding salt to the back door. Attempting to banish all spirits from the bathroom were deemed useless. Also now realizing the spirits are trapped inside. First realizing the shift of energy in my bedroom from the intense energy in my bathroom. Definitely being able to tell ( if your able to read energy ) that there is an obvious barrier coming from the bathroom door. Can someone please give me advice on how to handle this situation, thank you.