Valterra Odorlos V77012 Holding Tank Treatment (6lb Tub),1 Pack
Brand: Valterra
Provides naturally occurring bacteria with a continuous supply of the best alternative energy source to pure oxygen - nitrates.  
Safe and effective in all RV and marine Holding tank and septic tank systems
Effective even in extreme temperatures
Accelerates the breakdown of tissue and waste, helping to prevent clogs
100% , formaldehyde free and non-toxic