Your cart is empty.
Your cart is empty.AquaMax® Holding Tank Treatment’s advanced enzyme powered formulas neutralize odors and accelerate waste digestion to prevent clumping, clogging and tank residue, all at the same time. Thetford’s beneficial probiotic treatments are Bronopol Free and Formaldehyde Free to provide campground friendly and California compliant solutions. Proudly made in the USA, Thetford’s new family of AquaMAX® holding tank treatments have been extensively researched and tested safe for all RV and marine toilets, holding tanks and septic systems.
Cassie Haskins
Reviewed in the United States on September 2, 2024
Use this for super clean black and gray tanks. Smells good, easy to use.
chuck t
Reviewed in the United States on June 2, 2024
Don’t waste your money! In 40 years of using Thetford toilet chemical, I never had failure to control odors using the old chemical. This new formula fails in every respect. It’s a wasted effort. Maybe it’s a CA problem, due to regulations. Until somebody explains this failure, I’m done with this product.I would NOT recommend this product.
Michael J. Ruggiero
Reviewed in the United States on May 30, 2024
I used this for my RV.
AJTexas
Reviewed in the United States on March 20, 2023
I've had my RV for 10 years. I tried many holding tank solutions but they quit working before the time I need to drain the tank. I've been using this for several months. In awhile I will order my second bottle, as it's longlastsing.
Samantha Fox
Reviewed in the United States on January 8, 2023
Ordered this for the campa potty in our traveling vehicle. This blue is a bit more concentrated than other versions we have used, but it works well.No smells emanating from the potty, yay!The product just pours into your campa potty, dilute a little, then you’re good to go.
John S
Reviewed in the United States on August 30, 2022
I poured some of this in my RV tank then put the bottle back in the house. A Minth later I went to use more and noticed the bottle was very swollen. I carefully opened it and there was a lot of pressure. I closed it back up and waited a day. Again the bottle was swollen and under pressure. Considering how badly this stuff stains anything it touches, I’d be careful where I store it I don’t think I’ll buy it again. The scent is too strong anyway. I bought the fresh and clear version which doesn’t smell snd doesn’t build up pressure.
Gerald Dasch, Sr.
Reviewed in the United States on August 10, 2022
Been buying this brand for years and never disappointed us.
Recommended Products
