I haven't tried it but I understand that Raritan CP was developed by Peggie Hall, the Head Mistress. Peggie is a true expert on marine sanitation systems. I would certainly give it a try.
Yep, and if using an aerobic treatment like Raritan's (Peggie's) KO, a compatible product like CP is appropriate.
I would expect CP is likely compatible with other aerobic treatments like Odorlos, as well, but perhaps Peggie will jump in and confirm or deny.
We've used CP (and KO) for almost 20 years... with excellent results.
More recently, some of our owners group have begun singing the praises of Zaal Noflex Digestor for the treatment product. Have no clue how it works, but I've begun trying it (mostly just out of curiosity), and it seems to be effective as a holding tank treatment. Many of the other folks have described the magic, with claims about clean hoses, clean tanks, etc... but I'm not seeing as many claims that they've actually physically opened up their systems to eyeball the insides of hoses and tanks. IOW, I'm only seeing it seems viable.
The one instance where I did actually see some slight proof it works is in the very bottom of our bowl. We'd had some significant discoloration there, inherited from the original owner... and letting some Noflex work on that area before flushing did significantly return the bottom of the bowl to white. OTOH, I never before thought to just let some KO or CP stand in that area, so don't know if it wouldn't have done equally well in the first place.
The Noflex marketing system is a pain in the a$$. The only retailors seem to be in the PNW... and they apparently haven't figured out USPS flat rate boxes yet... so each bottle of powder costs something like $20 and then shipping is something like $17/bottle on top of that. Shipping is slightly less per bottle when ordering 3-4 or more at a time, but I suspect USPS flat rate charges would be friendlier.
IOW, KO is cheaper, since it's (at least) at the local West Marine.
But Parks, you might look into it, see if there's a marketing opportunity for you. Especially if you know how to do USPS flat rate boxes, but maybe because UPS or FedEx shipping charges from this coast might be useful for many of us over here on the right side.
-Chris