Microbe-Lift Spring/Summer Cleaner helps jump start your pond when warm weather hits, quickly creating a healthier aquatic environment. This natural, non-toxic formula comes in pre-measured packets that speed up the breakdown of leaves, sticks and other organic waste.16 oz - Contains 8 x 2 oz water soluable packets of cellulose enzymesA seasonal approach for proper bacterial balance in pondsReduces buildup of dead leaves and residual organic sedimentPre-measured, easy-to-use packetsUse to help jump start your pond to a healthier environment in the spring. Microbe-Lift Spring/Summer Cleaner is simple to use, all natural, non-toxic and non-caustic. It is not a chemical and is harmless to humans, fish and live plants. Packets are water soluble and cost-effective.Made in the USA.Contents: Water soluble packets of cellulose enzymes.