Turn off and unplug the air purifier.
Remove the front grille by pulling the tabs on either side of the grille, or pressing the buttons and sliding the grille forward, depending on your specific model.
Remove the pre-filter from the hook tape on the grille, and set it aside.
Dampen a cloth with warm water, and wring it out. Add 2 drops of mild dish detergent to the cloth.
Wipe both sides of the front grille thoroughly with the cloth to remove dirt or dust.
Rinse the cloth with clean water and wring it out. Wipe the grille with the cloth to remove any soap residue.
Dry the grille with a towel.
Dampen a clean cloth with warm water and wring it out. Wipe the exterior of the air purifier with the cloth to remove any dirt or dust.
Dry the air purifier with a towel.
Place the pre-filter on the back of the grille and use the hook tape to secure it into place.
Place the front grille onto the air purifier and make sure the tabs or buttons snap into place. Plug in the purifier.