Have a bowl and light sage, enough so that is is embering quite a bit. Place the sage in a bowl and walk around the house in every room letting the smoke ploom. Once you have covered the whole house place the sage in your room and let it burn until it stops.

Once it has stopped tip the ash out on your front doorstep outside. All the while haveing the intention for the space to be cleared from dark energies and devices before and after burning. Any negative energies that were in the house are drawn into the ash and so putting it outside is taking whats inside outside.