Freshen up your RV or marine holding tank with the THETFORD Aqua Max treatment. This pack of eight spring-scented enzymatic odor eliminators is designed to keep your tank free from unpleasant smells. Made by reputable brand Thetford, this unit type accessory is a must-have for any RV or marine enthusiast. It is manufactured in the United States and comes in a box containing 8 treatments. Perfect for ensuring your RV or marine holding tanks stay fresh and clean.