Allow your woodstove to cool and open the door. Remove the ash pan and brush any ash or soot inside the stove into the ash pan. Bury the ash outside to dispose of it. Vacuum the inside to the woodstove to remove any dust or debris you missed with the brush.
Remove the catalyst from your woodstove. Vacuum the catalyst to remove the dust and ash from it. Wipe the cells with the cotton swab to clean them. Place the catalyst back in the woodstove unless you need to give it a wet cleaning.
Fill a pot 1/2 full of distilled water and 1/2 full of white vinegar. Bring the solution to a boil. Wrap the plastic coated wire through the cells on the catalyst to make a loop around it. Dip the catalyst into the boiling solution and turn off the fire. Let the catalyst sit in the solution for 30 minutes.
Remove the catalyst from the solution and dump the vinegar water. Fill the pot with distilled water and bring it to a boil. Place the catalyst into the water and simmer for 15 minutes. Repeat this process with a fresh pot of distilled water.
Remove the catalyst from the pot and dry it off with a towel. Place it back in the woodstove. Avoid using the woodstove for at least 24 hours to allow the catalyst to dry completely.