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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Current price is $13.5156.3 ¢/oz
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Shipping, arrives by Sat, Aug 8 to Columbus, 43215
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4.7 out of 5 stars
stars
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
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
Sep 8, 2021
Cspierdowis
5 out of 5 stars
5 out of 5 stars review

Easy to use

[This review was collected as part of a promotion.] We have a 5th wheel. Taking care of your black tank is crucial. I like thr single dose toss ins like this one. Easy to use. This brand appears to be very efficient. We have not had any issues after starting this brand.

Review from Thetford Corporation
Helpful?24R1LLTFAM9V985932498
Sep 7, 2021
Maryland123
5 out of 5 stars
5 out of 5 stars review

Works great!

[This review was collected as part of a promotion.] While going on long trips in the 5th wheel, this works so good for the tank and gets rid of any bad smells that might stay in the tank! I love this product. And their other products they have as well. The facts that they come in singles and bigger packets is nice for people who live in them or just trips is really good.

Review from Thetford Corporation
Helpful?24R1LLTFAM9V985932498