Save time & money with an eco-friendly product that is safe for people, pets & plants. Orb-3 Spa Enzymes helps breakdown & remove organic materials (body oils, lotions, cosmetics, & other unmentionables) in hot tubs & spas. Specially formulated for warmer water, Orb-3 Spa Enzymes is the secret that professionals rely on for great looking spas all year round. Reduce heating bills while making your traditional chemicals more effective. With Orb-3 Spa Enzymes, you won't need to change the water as often and you'll reduce unpleasant chemical odors as well as skin & eye irritation that are normally caused by sanitizer "burning off" the organics. This natural product also helps keep filters cleaner while cleaning & preventing scum lines -that means less maintenance and scrubbing. Best of all, this product carries the Orb-3 60-Day Satisfaction Guarantee: if you are not completely satisfied with your purchase, return it within 60 days & we will gladly refund your purchase price. Apply 1 ounce per 500 gallons of spa capacity weekly. For best results, double during opening, closing, or periods of heavy usage. Mix in a bucket with 1 gallon of spa water & spread around the spa evenly. It is safe to enjoy the spa immediately. Do not put other chemicals directly in the bucket with Orb-3 Spa Enzymes. When you first use Orb-3 Spa Enzymes, you may find that it releases grime & buildup that are lurking inside the filter & plumbing. This is normal & a sign that the product is working. Allow a little extra time before use so that the enzymes & filtration can clean the water. Once the system is cleared up, regular use of Orb-3 Spa Enzymes will prevent the problem from recurring. Note: Orb-3 Spa Enzymes complements but does not replace the sanitizer in your hot tub or spa. Continue to use your sanitizer as before to ensure that pathogens are removed & the water is safe for your enjoyment. For best results, use within 12 months of purchase. Made in USA.