If there is a spirit, benevolant or otherwise in your house, then your highest priority is to move them onto the light. All beings need to return to the light after death. Having a haunted house is not funny or fun and may lead to spirit attachments.
Spirits can hear you. I recommend you say the following out loud. You can record yourself saying this on your phone's recorder and simply play back as needed.
I have recorded a short conversation and prayer that you can play and put on repeat if you are afraid or don't wish to say the prayer yourself.
This is a non-religious version of Tina Erwin's Crossing Over Prayer:
I humbly ask that any and all beings who have found my divine light of service be guided to a peaceful place in the light now. May every being receive healing and comfort in their journey. I pray that each being may find their path to peace and transition with ease. May all beings, regardless of how they lived or passed, receive love and compassion without judgment or bias. May the light of love and peace embrace and hold all beings now and always.I humbly ask that any and all beings who have found my divine light of service be guided to a peaceful place in the light now. May every being receive healing and comfort in their journey. I pray that each being may find their path to peace and transition with ease.
Most spirits are confused and lost- they will be wandering. They need help. Many will be afraid of hell or believe that they are cursed or doomed or trapped in purgatory.
If you are spiritual then you may like to use Tina's Prayer or create one from your own words.
Dearest Lord above,
I humbly request that you take any and all souls who have found my divine light of service into the heaven world right now. I ask that an Angel wrap each soul in a blanket of healing light right now. I pray that every single soul will use the light bridge provided by my Angelic team to transition into the heaven world right now. I send love and healing to all souls, no matter how they died, no matter their level of guilt without any judgement or prejudice whatsoever right now. May the light of your love Father embrace and keep all of these souls now and forever. Amen.
Tina's book The Crossing Over Prayer Book is published as an audiobook, so you can purchase it and play the relevant prayer when needed. She has 88 different prayers to cover specific circumstances.