Have RV Questions? Ask an RV Mechanic Online.
Check with your local RV dealer or shop and see if they have some Happy Camper Extreme Cleaner. That is what we use at my shop for this and it will clean that out in about 2-3 hours. Get back to me with the make and model of toilet you have and I may be able to come up with some other suggestions as well. All follow ups are included in our fee.
Just checking back in, Rachel to see if you got this resolved or do you still need some assistance from me?