I should have read the whole thread before writing my reply below...to answer your most recent question:
Is it a good idea to leave C.P. in the toilet bowl long-term (e.g. a week or two when leaving the boat)? Will it harm or deform rubber parts?
That won't hurt anything, but it won't accomplish anything after 8-12 hours either, 'cuz the cultures die.
Originally Posted by PamlicoTraveler
Raritan says to use on CP (clean potty) in their toilets, but it is expensive. I know it is just a mild soapy cleanser of some sort. Any recommendation for what can be used that would not harm the toilet and the fittings MD parts. Maybe something like Joy diluted in water
or with vinegar added? Peggy Hall, any comment?
Before we developed C.P. (it's part of the product line that I sold to Raritan in 1999), I kept a pair of rubber gloves under the vanity and used a LITTLE Comet on a wet paper towel to clean the bowl. The tiny bit that might be left to flush isn't enough to matter. You can use SoftScrub or any other dry or wet abrasive cleanser--or anything else that you wipe 99% out. Just DON'T flush household chemical bowl cleaners, though....or Lysol or bleach or pine oil
However, there is an even better use for C.P than cleaning
toilet bowls. It's NOT just a mild soapy cleansers, it's bio-active cleaner that not only destroys odor
on contact, but the enzymes in it "eat" hair, soap scum, body oils, galley
grease and all those things that go down shower
and sink drains to clog 'em up and make 'em stink...making it the best sump and drain cleaner on the planet!
Sumps: Once every week or two, or when closing up the boat, run clean water through it to rinse it out, leaving 2-3" in it--enough to cover the sump pump intake. Add about 2 oz C.P. down the shower drain--or icebox
or whatever drain feeds a particular sump--when it can stand at least overnight (the enzymes need time to work)...it won't harm anything, so it can remain in the sump indefinitely). When you return, run enough water into the sump(s) to rinse it out. That's all you'll ever need to do have clean, sweet smelling sumps.
Sink drains: Again, when it can stand at least overnight, close the seacock(s) and put an ounce of C.P down the drain...fill the drain with water. When you wake up or return to the boat whenever, open the seacocks and rinse out the drain with clean water. Done.