SuperNatural’s new easy to use Excellofizz C02 pucks now contain eucalyptus. This refreshing and uplifting fragrance is sure to enhance your growing pleasure and will cover unwanted odors. Eucalyptus also kills airborne bacteria and dispels mites. Excellofizz is designed for the smaller indoor grower. It allows a simple and economical way of providing accurate C02 levels to your plants without the need for dispensing or monitoring equipment, especially where venting is limited. Excellofizz emits the proper C02 levels for indoor plants by reacting and simultaneously giving off pure C02 gas and absorbing oxygen from the surrounding air.