The Murmur Box Spirit App

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Just encase someone doesn't know, you do need to protect yourself when talking to Spirits you don't know as Family.

Always make sure you open spirit communication with a prayer of protection, asking that God as well as all angels and guides stand with you to protect you. Ask to work with only those spirits or energies that are edifying, supportive and working in the Light.

Make sure to ground yourself and energetically clear the room before attempting to make contact with spirit. Grounding yourself involves visualizations in which you release all negative energy from your body while at the same time drawing down into your body divine energy from your God or Guarding Angel. 
To clear a room or space, visualize that space as gradually filling with brilliant white divine Light. Make sure the light spills everywhere and covers all four corners of the space and then build the Light until the entire room is filled with it, side to side and top to bottom.

This reason and other reasons are way Bad Spirits have followed some people home.

Make sure you are attempting to communicate with spirit for the right reasons.
If you want to make contact because you think it’s cool, have a fascination with death, you are doing it for the wrong reason. This may attract malicious spirits seeking to harass and frighten you. 

Spirits working for your edification and betterment will never tell you to replace your judgment with theirs. They will never seek to tell you what to do or control you in any way. High-level spirits make suggestions, offer insight and present options.

Hope this helps.
Stay Safe.

Here is a Great link for Sensing Spirits and what to look for and how to deal with them.
LINK