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Dan Ebert
Peggy.Run out of K.O. and switch to Odorlos. Odorlos does not do the job. Want to swithback to K.O. I know K.O. states to use that no resdue of other products to be in the holding tank. Will a pump out and rinse do the job, or do I have to replace the holding tank.Thanks.p.s. I will keep extra K.O. on hand.