Pyranha Odaway Concentrated Odor Absorber- Gallon. Mixes directly with your Pyranha Insecticide. Eliminates odors from Livestock, Urine, Organic Decay, Mustiness etc. Leaves a fresh clean scent! Odaway is very effective when dispensed by way of automatic misting system because it encapsulates and neutralizes odors instead of just masking them. Use 1 gallon for 55 Gallon Systems. 1/2 gallon for 30 Gallon Systems.