Forum Discussion
mowermech
Aug 25, 2014Explorer
Considering the amount of hot soapy water that goes into the grey tank, I have never found it necessary to add anything.
For the black tank I use whatever citrus scented tank stuff I can find at a low price. Not because I "need" it, but because I WANT it in there. Whenever possible, I run the tank flush for about 5 minutes after dumping, then close the valve, add whatever I happen to have at the time to the toilet bowl, then fill and dump the bowl about 4 times. That ensures that there is enough water in the tank to thoroughly dissolve the chemical packet.
It works for me.
For the black tank I use whatever citrus scented tank stuff I can find at a low price. Not because I "need" it, but because I WANT it in there. Whenever possible, I run the tank flush for about 5 minutes after dumping, then close the valve, add whatever I happen to have at the time to the toilet bowl, then fill and dump the bowl about 4 times. That ensures that there is enough water in the tank to thoroughly dissolve the chemical packet.
It works for me.
About RV Tips & Tricks
Looking for advice before your next adventure? Look no further.25,179 PostsLatest Activity: Jan 16, 2026