How do you cleanse a room I'm willing to buy ingredience to achieve this?

Try smudging

Use Sage my friend, go to a local hrbal shop and ask for Sage that you burn like insense, you light it and wave it in the 4 corners of the room this takes away all negativity.

The proper way to cleanse the house is to buy a package of sage incense or a few FRESH branches of sage. Light the tips on fire, then blow them out (causing them to glow red and continue burning) to release lots of very sage scented smoke. Walk from room to room in your house, spending more time where the negative energy is concentrated, allowing the sage smoke to fill the house and purge the negativity. This process may need to be repreated to re-inforce to the negative energy that they're not welcome there......Have you ever seen that show Flipping Out?....He does that kinda stuff all the time...watch a few episodes of that show and he'll show you how it's done!.....Good luck...=)~

try using some industrial strength bleech lol

You will need to get some lizards bones mix with lavender seeds and rattle them at midnight.

With the door and window open, I would use my broom to sweep out the negative energy. I would cast a circle in the room with the physical boundaries of the room as the psychic boundary of the circle, with invoking pentagrams at the corners of the room. I would consecrate salt and water and sprinkle it around the edges of the room, the doorframe and the windowframe. Keep it simple, whatever works for you. The important thing is that when you say "so mote it be", you really believe it. I am also a Wiccan.

Sage is right. You can buy Smudging sage to cleanse your home. Look for a metaphysical shop in your area or go on line. Light the end of the bound small bundle of sage and fan it till it starts burning and smoking like incense. Think positive thoughts or saw a prayer or ritual chant, depending on your religious beliefs if any, and go from room to room to clear all negativity in the home. Follow this all the way out the door of the home. This will cleanse all negativity

If you are wiccan I'm a bit surprised that you need to ask how to do a basic cleansing. But hey ho. Make up a large bucket of sage water - dump a couple of handfuls of fresh or dired sage into a bucket of water and visualise the water having the power to cleanse all negativity away. Then wash the walls, windows, paintwork, doors and floor (if you can) with the sage water. Then smudge with a sage smudge stick, making sure you get right into the four corners of the room. Black obsidian is a wonderful crystal for absorbing negativity, so placing a chunk of it in the room will help.

I was taught a very basic cleansing spell when I was first starting out. All you need is a white or pale blue candle , a piece of paper a pencil and some salt. Draw a pentagram on the paper, place the candle in the centre and circle salt around the candle. As you light the candle ask for all negative energy to be absobed. After the candle burns out let it cool and wrap it all up in a parcel. Take it outside and dispose of it , preferably in running water. once you've put it down don't look back. Purple candls are good for warding off further negativity and psychic protection.