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Old 01-21-2012, 11:41 PM   #1
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toilet bowl cleaner?

What do you use that doesn't kill the black water digesters?

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Old 01-22-2012, 06:42 AM   #2
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Blackwater tank is a HOLDING tank, and not a septic system as some folks think. A residential septic system does indeed digest (break down) effluent from the sewage system over time but still requires occasional pumping out since not all waste is broken down. The portion of effluent in a residential septic system that IS broken down into a liquid slurry is drained out and distributed into the septic field where rain, septic field aggregate, and earth filter it over time.

While the holding tanks in our RV's do naturally undergo minimal "digesting", such breakdown is not integral to the correct, intended use of these tanks. As such, toilet cleaning chemicals are not a significant issue. I'd be more concerned with the effect such cleaning agents have on the hard surfaces of the toilet bowl and pipe systems.

At least that what I believe.

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Old 01-22-2012, 06:53 AM   #3
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Use what you use at home (except I wouldn't use abrasive cleaners on a plastic toilet)...the amount you're going to use to clean the bowl will be insignificant.
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Old 01-22-2012, 07:03 AM   #4
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We keep a bottle of biodegradable cleaner (Mrs Meyers Clean Day) in the cabinet. Once every day or two, about a capful in the toilet water, quick swish with the brush and done.

We use plenty of water, before and after "use", so nothing clings to the bowl normally.
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Old 01-22-2012, 08:26 AM   #5
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I use just a little bit of CLR mixed with water, and every time (over several hours) I pass the toilet, I give the whole bowl a little switch with the bowl brush.

I have found out over the years, as a full-timer, that there is indeed digestion going on in the holding tank and that knowledge precipitates its use.

A little CLR has not destroyed the chemical action from continuing, but the use of bleach can disrupt the process, and allow the dreaded stink, even to the extent that if I smell a high chlorine content in a fresh water fill, I will not use that water for the bowl.

I stop my dumps when the tank is near empty so as to save a little of the active contents, and never, ever, "clean out" my black tank. I note again that this is one full timers method and not applicable to weekend, or casual RV use.

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Old 01-22-2012, 09:39 AM   #6
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spray the bowl with pam cooking spray and things will tend not to stick and stain.
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Old 01-22-2012, 09:43 AM   #7
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We use Lysol and have never had any problems.
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Old 01-22-2012, 10:10 AM   #8
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In my 5th wheel, I used vinagar. I use it in the house as well. Also cleans glass top stoves in the house very nicely.
I just bought the M/H, but will more then likely use it in there as well. No harmful chems., the acid removed scum and soap residue. cleans my shower door from stains.
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Old 01-22-2012, 11:43 AM   #9
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Thetford makes a toilet bowl cleaner that is safe for plastic and rubber seals.
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Old 01-23-2012, 08:15 AM   #10
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The manual to my Sea Land toilet says do not use abrasives (Comet, Soft Scrub), or caustic chemicals (Drano) or lubricants or cleaners containing alcohols or petroleum distillates (Pam, Pine Sol, WD 40, etc).
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Old 01-23-2012, 08:39 AM   #11
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A little Simple Green works for me...
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Old 01-23-2012, 09:14 AM   #12
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Originally Posted by bmrzmrs View Post
What do you use that doesn't kill the black water digesters?
Since I dump the tank looong before any 'digesting' occurs, I don't worry about it. We do use a occasional splash of the 'green' deodorizer/cleaner.
Wretched excess is just barely enough.

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Old 01-23-2012, 09:16 AM   #13
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Originally Posted by Cat320
The manual to my Sea Land toilet says do not use abrasives (Comet, Soft Scrub), or caustic chemicals (Drano) or lubricants or cleaners containing alcohols or petroleum distillates (Pam, Pine Sol, WD 40, etc).
Mine too.

Cliff,Tallulah and Buddy ( 1999-2012 )
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Old 01-23-2012, 01:44 PM   #14
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Try baking soda. Enough 'grit' to effectively clean, plus it is good for your tank. In fact baking soda is good to put down all of the drains - and if a little slow, flow with a little vinegar.


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