Raritan K.O. Kills Odors Bio-Active Holding Tank Treatment - 32oz Bottle
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Raritan K.O. Kills Odors Bio-Active Holding Tank Treatment - 32oz Bottle
K.O. Kills Odors Bio-Active Holding Tank Treatment - 32oz Bottle
*K.O. Is Not A Chemical Product*
K.O. utilizes live, odor-killing bacteria which digest liquids, solid waste, and paper, totally emulsifying them so there’s no need to add “tissue digesters” or other “boosters” to your system. The bacteria in K.O. actually neutralize the odor-causing elements in waste, effectively converting the contents of your holding tank to an odor-free product.
K.O. Is More Effective Than Any Chemical Or Enzyme Product.
Chemicals only mask the odor temporarily. Although they kill odor-causing bacteria, chemicals also kill other bacteria that suppress odor. Chemicals can actually cause the odor problems you’re trying to solve!
Enzymes stimulate the breakdown of waste already in the tank, but are not effective against odor, and are diluted by new waste as it’s added. You need only four ounces of K.O. per 25-gallon tank capacity. There is seldom any need to add K.O. between pump outs, nor do you need to pump out until the tank is full, making K.O. less expensive to use than lower-priced products. Unlike chemicals, the discharge from tanks treated with K.O. is welcome in on-shore sewer and septic tank systems.

Manufacturer Part Number: 1PKO32
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| Manufacturer Part Number: | 1PKO32 |
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Return Policy
Hodges Marine accepts returns for up to thirty (30) days after shipment. Our return policy does not apply to the following goods: Open software, mapping/chart data cards, programmed AIS units, opened/registered KVH Starlink products, trolling motors, international orders, freight truck only items, and special order items. These items are not eligible for return, refund or exchange. Shipping charges (if any) are non-refundable. If your return is accepted by Us, We will provide one of the following within a reasonable time: an exchange of merchandise for the item returned, a non-transferable merchandise credit, a credit to the payment card or original method of payment used to pay for the item, a check, or another remedy that we determine in good faith is appropriate in the circumstances. Customer must request a return merchandise authorization (RMA) through the product returns link on our website or by emailing us at [email protected]. A RMA number will be issued with instructions for returning the package within a reasonable time (normally 1-3 business days).
Defective Products:
A prepaid return shipping label will be provided for defective items if deemed necessary by the manufacturer. The customer must first contact the manufacturer for technical support to confirm product is defective and that product replacement is deemed necessary. Please provide the name of the technician, serial number, and details about the defect. Return instructions and a label will be provided.
Non-Defective Returns:
Eligible non-defective products may be returned for a full refund minus shipping paid (if any). To be eligible for a non-defective return, your merchandise must be unused/unopened and must be in the original packaging. Non-defective returns that show signs of installation/use, missing parts/packaging, missing proof of purchase/UPC code, or have serial numbers that do not match our records will not be accepted. Customer is responsible for return shipping costs of non-defective returns. You should consider using a trackable shipping service or purchasing shipping insurance for items of value. Hodges Marine is not liable for lost or damaged return packages.
General - Cancellations, Shipping Damage, Missing Packages, Shipment Refusals:
Orders that you submit online are processed immediately and may not be cancelled, and you may need to wait until you receive the merchandise in order to return it. Claims of shipment damage, incorrect/missing items, or non-receipt of goods must be made within seven (7) days. Customer is responsible for all costs associated with refused shipments or return to sender (RTS) shipments including carrier fees, freight to the customer, and return freight. We reserve the right to refuse returns that are sent COD, without a return authorization, show signs of undisclosed installation/use, has missing parts/packaging, missing proof of purchase/UPC code, or have serial numbers that do not match our records. If you do not comply with any of the above conditions, We reserve the right to refuse the return/exchange, or to impose different or additional conditions. Please see our TERMS AND CONDITIONS for additional applicable information.
Last Updated: JUNE 09 2026
Please email us at [email protected] or use the product returns link.











