Thetford Aqua MAX® Summer Cypress RV and Marine Holding Tank Treatment,16-ct Toss-Ins (96670)
Thetford Aqua MAX® Summer Cypress RV and Marine Holding Tank Treatment,16-ct Toss-Ins (96670)
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Thetford

Thetford Aqua MAX® Summer Cypress RV and Marine Holding Tank Treatment,16-ct Toss-Ins (96670)

|45 ratings
Thetford Aqua MAX® Summer Cypress RV and Marine Holding Tank Treatment,16-ct Toss-Ins (96670)Thetford AquaMAX Summer Cypress 16 Ct Toss Ins Holding Tank Treatment
Pack SizeSingle

Key item features

  • Enzyme-Based Treatment: Features a quick-acting, enzyme-based formula that effectively breaks down and liquefies waste and toilet paper in holding tanks.
  • Odor Elimination: Eliminates offensive odors from holding tanks while leaving behind a pleasant Summer Cypress scent.
  • Versatile Application: Designed for use in RV and marine holding tanks, as well as portable toilets.
  • Eco-Friendly Formula: Formaldehyde and Bronopol-free, compliant with regulations, and formulated with beneficial probiotics, making it safe for septic systems, campgrounds, and marinas.
  • Convenient Dosing: Each 1.5-ounce packet treats a 40-gallon holding tank, with 16 doses provided per resealable bag.
  • Non-Toxic Dye: Includes a non-toxic green dye for visual indication.
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4.7 out of 5 stars
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45 ratings40 reviews
How item rating is calculated
  1. 5 stars80% (36)
  2. 4 stars13% (6)
  3. 3 stars2% (1)
  4. 2 stars2% (1)
  5. 1 star2% (1)
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Showing 1-3 of 40 reviews

Feb 3, 2026
Reviewer name: jesse
Top Reviewer
Item details
Size: Bag Of 16 Treatments
Multipack quantity: 1
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

well what can I say; it works! keeps the smell away and breaks everything down. makes the flow out easier.

Helpful?24R1LLTFAM9V985932498
Mar 24, 2024
Reviewer name: Michael
Item details
Size: Bag Of 16 Treatments
Multipack quantity: 1
5 out of 5 stars
5 out of 5 stars review

RV tank treatment

great price and conversion to be able to get it at walmart

Helpful?24R1LLTFAM9V985932498
Jan 20, 2022
Reviewer name: Breezn5724
5 out of 5 stars
5 out of 5 stars review

Smells good

[This review was collected as part of a promotion.] The product appears to work very well. We have used it twice now and find no odors when emptying the Black tank. The packaging is sturdy and keeps the product dry.

Review from Thetford Corporation
Helpful?24R1LLTFAM9V985932498
Current price is $13.5156.3 ¢/oz
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