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Old 09-07-2006, 04:29 PM   #14
bob n pam
Montana Master
 
Join Date: Sep 2004
Location: sioux falls
Posts: 1,835
M.O.C. #2121
We have used Pure Power, which is an enzyme product, for several years and are satisfied with the results. As others have said, it is important to keep water in your black tank at all times and not to leave the valve open unless dumping the tank.
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