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Thetford

Thetford Fresh Water Tank Sanitizer Detergent and Treatment - 2 x 24 oz Bottles, Color: Clear PN 36662

  • Based on 615 reviews
Condition: New
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Arrives Sunday, Aug 2
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Features

  • [VERSATILITY]: Thetford's Fresh Water Tank Sanitizer works in RVs, trailers, campers, and boats
  • [FUNCTIONALITY]: Cleans and sanitizes the inside of the freshwater tanks and the plumbing
  • [UTILITY]: Kills 99% of the harmful bacteria, including Staphilococcus, E-Coli, Listeria, and other micro-organisms
  • [CONVENIENCE]: Easy-to-use 2-part system for cleaning and sanitizing the fresh water tank
  • [SAFETY]: Free of bleach and chlorine, leaves no smell or taste

Description

Thetford's Fresh Water Tank Sanitizer is an easy-to-use 2-part system designed for cleaning and sanitizing fresh water tanks and plumbing on RVs, trailers, campers, boats, water coolers, coolers, ice machines, refrigerators, ice chests, or any washable hard, non-porous surfaces.Step 1: Clean with the detergentEmpty the tank and add 1 ounce of concentrated detergent solution to the fresh water tank for every 4 gallons of tank capacity.Fill the tank with water and run the diluted detergent through each faucet, shower, and water outlet for 1 minute or more.Empty the tank and rinse the faucet lines and tank by running fresh water through them.Step 2: Sanitize the waterShut off incoming water line and prepare a solution of 2 ounces of product per 8 gallons of water.Apply or circulate solution to wet all surfaces, allowing it a minimum contact of 60 seconds.Drain the solution and return to service by reopening incoming water lines.The treatment is effective even in hard water and will not leave grit or soap scum. Not a drinking water additive.

Brand: Thetford


Item Form: Liquid


Scent: Fresh


Specific Uses For Product: Faucet, Refrigerator, Shower


Item Volume: 24 Fluid Ounces


Item Form: Liquid


Scent: Fresh


Specific Uses For Product: Faucet, Refrigerator, Shower


Surface Recommendation: Shower


Special Features: Concentrated


Contains Liquid Contents?: Yes


Item Volume: 24 Fluid Ounces


Unit Count: 48.0 Fluid Ounces


Number of Items: 2


Item Weight: 5.92 ounces


Brand Name: Thetford


Manufacturer: Thetford


UPC: 028985366621


Item Type Name: Thetford Fresh Water Tank Sanitizer Detergent and Sanitizer Treatment, 2 x 24 oz


Included Components: Thetford Fresh Water Tank Sanitizer Detergent and Sanitizer Treatment, 2 x 24 oz


Warranty Description: Warranty


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Aug 2

This item is non-returnable:

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

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Top Amazon Reviews

    • Who knew??
There’s a learning curve with the first RV. Water was one of those things. After each trip we ran the faucets until the tank was empty. Or so we thought. Turns out it’s very important to pull the plug draining the tank from below AND pull the plug to empty the water heater. We didn’t. Pretty soon our water smelled very nasty. We put bleach into the tank, drove it around to slosh it around. Still nasty. I did some research and found this product so I bought it. Followed the directions and now our water is fresh as can be. There’s zero scent to our water. Worth every penny to have a clean system. We also bought a “wand thingy” that sprays into the water heater to clean it out right before we used this product. Some sediment came out with that. I think using both this product and the sprayer are both good practices to keep everything clean. ... show more
Reviewed in the United States on July 25, 2025 by Julie
    • This treatment really worked!
We had tried a number of different solutions to get that rotten egg smell out of the water system in our camper and none of them worked long term. The smell always came back. It takes time and water of course but if you follow the directions to a "T" this will do the trick for you! No more nasty smells in our water system. I will buy this product again should we ever need it. ... show more
Reviewed in the United States on August 2, 2023 by JaktUp
    • Use on the fresh water tank of boat
I used this to clean and sanitize the freshwater tank of my boat. Somehow I got some odor in the 30 gal tank even using a capful of bleach. This Sanitizer freshened it right up. Just use as directed. flush system until water shows no foam. Water tank hose been fresh for 6 months now.
Reviewed in the United States on October 13, 2024 by Robert A. Frascella, JR.
    • Good product, but a little taste and foam or a bit.
Used to disinfect our brand new camper water tank. Was easy to use when following instructions. After all said and done it had a little bit of taste for a few tanks of water and did foam up for while but taste and foam went away after a few tanks. We even dumped a full tank after the treatment. Overall good product. I feel that it did a good job cleaning and I would buy it again. ... show more
Reviewed in the United States on February 27, 2025 by BWBCAM69
    • Satisfied.
I tried this. Not sure if it was the better choice over regular chlorine. But I assume it is less harsh than diluting chlorine and damaging the plastic and PVC piping in the motor home. I removed all filtration before using and flushed out several tanks of water before putting back into service. I didn’t notice any chemical smell or foaming in the water afterwards. ... show more
Reviewed in the United States on September 4, 2025 by TAngell
    • Love it no bleach smell
Does the job keep fresh tank clean and easy to use just wish did not have to waste so much water to flush it
Reviewed in the United States on May 14, 2024 by ACB
    • Resolved bad taste and odor first time
Purchased camper 3 months ago and water had awful taste and a chemical odor. Did a bleach treatment and NO change. Terrible chemical smell and awful taste. Purchased this kit and used as directed and I am very happy to report the smell is gone and the taste is perfect! Back to drinking water right out of my camper spigots!! Made my used camper purchase seem brand new! Highly recommend. This worked perfectly for me. ... show more
Reviewed in the United States on July 19, 2024 by bill powell
    • Works as advertised
Even after adding extra water and flushing their system we still had that smell that no one wants. This cleaned it completely and though there was a lot of suds coming out at the end it was a clear clean type of suds that shows it was well cleaned and safe to use.
Reviewed in the United States on October 31, 2024 by Jnl519

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