Go get five habanero peppers. Cut them into small pieces (wear latex gloves or you will have burning fingers) and boil them in one quart of water for 20 min. Let cool and strain. Spray the shit out of your spider mites. all organic and wont hurt your plant at all. If mold is an issue for you, use 2 tablespoons of milk in one quart of water the next day. It will make the plant too alkaline to have mold.