Black tank chemical

[osuallen]

If you put it in your fresh tank and then run it through all the lines to sanitize them it going to end up in your black and Grey tanks.

But only a little bit. Not like you will put 30-40 gallons in each and it is very diluted.

 

[TheLooks]

All methods work until they don't. Then its time to try something else. Just like rodent deterrent.