Walex Bio-Pak (R) 10-Bag 32 Gram Pouch Holding Tank Treatment w/Deodorant BIOTROPBG 13-0828

Biological treatment is used to deodorize black water holding tanks, break down solid waste & liquefy tissue to prevent messy clogs. It doesn't have formaldehyde. It lubricates valves & cleans sensor & treats up to 50 gallon holding tanks. It comes with d