Ok This is real serious situation here. It is real and you need to know what you are doing. I've been in the exorcism ministry for a number of years with a number of priests and you have know what you are doing. This is not for amateurs. Holy water does not have an effect on this type of manifestation, sorry. What I need to know from you is some information on your family and the house. They could be lower order demons called familiar spirits who mimic the voices of love ones, and give extensive history of the person's life. Psychics called them ghosts or departed love ones inhabiting the place but I am sorry that deception. All instances are evil in nature. If you want to contact me privately, you can tell me the history of the house, previous owners, current owners and sinful activity like drugs or violence that might have occurred in that house. In other words, do they have a legal right to be there. I need to ascertain the level of demons in the house. Do not attempt to initiate any contact with the demons unless you are walking in absolute pure holiness. Any sin in your life, you could be destroyed...have seen it happen. So if you are walking close with God in purity and holiness, then you have the ability to command them to leave. Fasting is also helpful.
But if you want to talk about this more contact me directly with a private message.
Refer to the scriptures on spiritual warfare. Eph 6:11-12 We wrestle not against flesh and blood but against principalities and wickedness in high places
2 cor: 10:5 We are destroying speculations and every lofty thing raised up against the knowledge of God, and we are taking every thought captive to the obedience of Christ, ... Casting down imaginations, and every high thing that exalts itself against knowledge of God,
When Jesus confronted the demons, He always used the word of God that is our sword and our shield is our faith.
There is only 3 things that demons fear, the word of God, the holiness of man performing the exorcism and most important part the power of the Holy Spirit.
I've seen rosaries lifted off the necks of Catholics, Holy Water splashing into flames, crucifixes flying off the walls,and people being attacked. But this can be all prevented by following specific procedures during the house cleaning. You don't have to experience all the typical stuff you read about. It can be down in a quiet manner as demons feed on fear.
So if you wish to contact me I will give analysis the situation, your options and advise accordingly.