Of course they stay there in your house to harass you. They are not your friend, they are demons. When your done playing with demons seek Jesus.
When you have had enough problems with bad dreams, illnesses, and chaos tell them IN THE NAME OF JESUS LEAVE NOW!
They will leave and the power that your are seeking will become evident that is the power that Jesus has and offers to you to overcome all evil, the whole world of evil.
So your looking for power and to be connected with something greater than you- well it is Jesus.
Meet Jesus, accept Him, Romans 10:9-10 and watch Him come to your rescue.
He saves us from ourself, our sins, our bad choices.
So even though we make friends with the devil, and the devil comes to steal kill and destroy- Jesus is full of mercy and forgiveness and will restore, save and deliver us from all that is against His will and His people.
His people perish for the lack of knowledge.
I have pages on evil spirits, demons, deliverance prayers if you are wanting free. God bless you!