Hello Maya, If you think you might have an entity in your house
my suggestion to you is, first don't show your fear.Some entities will feed off your energy. Second ask God to surround you and your family with the White light of Jesus, Light one black candle and one white candle in the center of your house. The reason for this is, the black candle will absorb the negitive energy, and the white candle will allow the positive energy to flow through.Get a box of salt and sprinkle it through out your home going from room to room. If you have some one to help you, they can sage as you salt. If you don't,you can sage after. as you go through each room ( from attic to basement )in a calm voice TELL the entity to leave that their work is done, that they need to go to the white light of God.
Some entities don't realize that they are dead,so you might get some restance.If that is the case, you have to explain it to them, and that this is YOUR home now and you want them to leave to go to God where they can unite with their loved ones on the other side.Sometime they are afraid to cross over.You have to explain, that God loves them and forgives them, But they need to go. GOOD LUCK. Blessed Be