Walex Porta-Pak (R) 10-Bag 32 Gram Pouch Lavender Holding Tank Treatment w/Deodorant PPRV10LAV 13-0359

Biological treatment is used to deodorize black water holding tank, break down solid waste & liquefy tissue to prevent messy clogs. It doesn't have formaldehyde. It lubricates valves, cleans sensor & treats up to a 50 gallon holding tank. Bag of 10 drop-