This Product does not ship free. Shipping will calculate in shopping cart. Please watch the YouTube video below before use. Always wear long sleeves, heavy gloves and proper eye ware. How to use: - make sure the appliance is not clogged! - wear suitable protective equipment: gloves and mask! Oxalic acid vapor still escapes during the cleaning! Caution, risk of burns! - Switch off the appliance after use, but leave the battery connected. - wait until the appliance cools down to about 390°F. - remove the oxalic acid dispenser. - fill the silicone cap half full of distilled water, then turn the unit upside down and press the silicone cap firmly onto the dispenser tube. - keep the silicone cap firmly pressed down and turn the appliance upside down. - repeat the above. https://www.youtube.com/watch?v=UJrZMZrsT2Y&t=25s 3 Pack.
