Looking for feedback on Raritan's Knock Out Odors (KO2) kit

May 27, 2025
9
Hunter 356 Monterey
Good morning - I like the idea behind the Raritan KO2 kit: with every flush a little bit of C.P. is pushed through the pump (I've a SuperFlush) and through the bowl to prohibit low tide-like odors. It's on the pricey side, but includes a metering valve that appears to be expensive to buy on its own so is probably not a horrible deal. Oddly, while lots of stores stock the product I can find few comments about the product in the forums. Does anyone here have good or bad things to say about it? Thanks!
 
Jun 11, 2004
1,803
Oday 31 Redondo Beach
To each his/her own. This is my solution to the problem that the Raritan's kit solves.
View attachment 233753View attachment 233754

Alternative to Raritan Spray Kit
This approach does not get CP into the intake lines or the toilet bowl rim. That is, unless you have modified your system to be able to flush with water through the sink and you spray the CP into the sink before flushing. If I wanted a little CP in every flush that is what I would do. Not buy the expensive Raritan kit.
 
Dec 2, 1997
8,959
- - LIttle Rock
Fwiw, Raritan K.O. doesn't stand for "knockout"...it stands for Kills Odors. It was the first of the product line my company, Peal Products, (named "Pe" for Peggie, "al" for my husband Allen) developed and put on the market in 1987 and was also the first tank product that wasn't one of the gawdawful Thetford portapottie chemicals. Its active ingredient is live aerobic bacteria. CP ("cleans potties") is its companion product. I sold my product line to Raritan in 1999.

Raritan only markets C.P. as a bowl cleaner, but it happens to be the best sump and sink drain cleaner on the planet.
Sumps: Fill the sump at least 1/3 full with clean water...add 2-3 oz of CP when it can remain at least overnight (the bacteria need time to work)
Sink drains: close the drain thru-hull, put 1-2 oz of CP down the drain and fill the drain with clean water...again when it can stand at least overnight. It can remain in sumps and drains for months without harming anything, it just exhausts its food supply (the stuff you're cleaning out of 'em) in about 24 hrs

--Peggie
 
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May 27, 2025
9
Hunter 356 Monterey
Fwiw, Raritan K.O. doesn't stand for "knockout"...it stands for Kills Odors. It was the first of the product line my company, Peal Products, (named "Pe" for Peggie, "al" for my husband Allen) developed and put on the market in 1987 and was also the first tank product that wasn't one of the gawdawful Thetford portapottie chemicals. Its active ingredient is live aerobic bacteria. CP ("cleans potties") is its companion product. I sold my product line to Raritan in 1999.

Raritan only markets C.P. as a bowl cleaner, but it happens to be the best sump and sink drain cleaner on the planet.
Sumps: Fill the sump at least 1/3 full with clean water...add 2-3 oz of CP when it can remain at least overnight (the bacteria need time to work)
Sink drains: close the drain thru-hull, put 1-2 oz of CP down the drain and fill the drain with clean water...again when it can stand at least overnight. It can remain in sumps and drains for months without harming anything, it just exhausts its food supply (the stuff you're cleaning out of 'em) in about 24 hrs

--Peggie
Thanks, Peggie - So to be clear, from your perspective the KO2 is a product/system that does what it says on the tin?
 
May 7, 2012
1,567
Hunter e33 Maple Bay, BC
This approach does not get CP into the intake lines or the toilet bowl rim. That is, unless you have modified your system to be able to flush with water through the sink and you spray the CP into the sink before flushing. If I wanted a little CP in every flush that is what I would do. Not buy the expensive Raritan kit.
Totally agree. Depending where our cruising grounds maybe for any particular trip, we will use fresh from the sink in a cup to flush the toilet. The last thing we do is give 5 or 6 squirts of a mixture of Odorlos and water around the bowl before we close the toilet lid. If we are cruising in areas where fresh water is unavailable we still squirt with the odorlos mixture but will flush with sea water. The next time fresh water is available alongside I will flush both the anchor washdown system and the raw water toilet system. Closing the thru hulls when done.