Oh, we've been over this one about 3 or 4 times now. God's opinion on demons and what should be done with them? How's this for starters:1 Peter 5:8 - Be self-controlled and alert. Your enemy the devil prowls around like a roaring lion looking for someone to devour.
James 4:7 - Submit yourselves, then, to God. Resist the devil, and he will flee from you.
Mark 1:21-27 They went to Capernaum, and when the Sabbath came, Jesus went into the synagogue and began to teach. The people were amazed at his teaching, because he taught them as one who had authority, not as the teachers of the law. Just then a man in their synagogue who was possessed by an evil spirit cried out, "What do you want with us, Jesus of Nazareth? Have you come to destroy us? I know who you are--the Holy One of God!" "Be quiet!" said Jesus sternly. "Come out of him!" The evil spirit shook the man violently and came out of him with a shriek. The people were all so amazed that they asked each other, "What is this? A new teaching--and with authority! He even gives orders to evil spirits and they obey him."
Matthew 25:41 - Then He will say to those at His left, 'You that are accursed, depart from Me into the eternal fire prepared for the Devil and his angels".
Revelation 20:10-14. And the Devil that deceived them was cast into the lake of fire and sulfur, where are also the beast and the false prophet; and they shall be tormented day and night for ever and ever. And death and Hades were cast into the lake of fire. This is the second death, even the lake of fire.
Jesus never once said to be nice to the devil, so I really don't think He minds any of us dishing out a little digital buckshot considering the fate that's been prepared for these accursed fallen angels. Spiritual whoop-ass is actively encouraged for those who read their bible. 
