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Ships within 48 hours · Estimated delivery Aug 14 - Aug 19
For Your Every Summer RSVP, with Code: SUMMER15
Description
Thetford Duo Tank Cleaner Concentrate 800mlThis Duo Tank Cleaner from Thetford is a powerful, concentrated cleaner for waste holding tanks and grey water tanks. It removes scale, encrusting and grease deposits from both tanks and leaves a pleasant citrus fragrance. For best results use 2 3 times a year. This products allows for: 4 cleanings of the waste holding tank (4 x 200 ml) 1 cleaning of the waste holding tank (200 ml) + 1 cleaning of the grey water tank (600 ml)

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- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.3 ★★★★★
Based on 1089 reviews
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Product Reviews
★★★★★ 5
Great Product
Style: Updated Formula
I will purchase this again. very gentle on the skin and moisturizes.
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Reviewed in the United States on February 14, 2026
★★★★★ 4
Like it but expensive
Style: Updated Formula
I like it. It does what it says. I just don’t like the price.
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Reviewed in the United States on May 16, 2026
★★★★★ 5
returned- for now
Style: Updated Formula
I was using the lotion version of this for about a year, then went to the balm for more hydration. However, it seems to be breaking me out. I think because it's spring, im not needing as much occlusion as i did during winter. I'm gonna go back to the lotion formula, then pick this up again next winter.
It is a little hard to spread, but I spray the avene mineral water on, let it dry slightly, and press the balm into my skin when its still wet. That helps thin the balm just enough to rub in. Otherwise, it can actually feel kind of rough!
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Reviewed in the United States on April 2, 2026
★★★★★ 5
Impressive
Style: Updated Formula
Nice thick cream! I even saw results (skin improvement) within days. I like this way better than their Cicalfate+, as it’s easier to rub in, less greasy, and doesn’t have the water vs cream separation issue. I’m not a huge fan of the pump top for this one, but at least it’s a tube instead of a solid canister (where you can’t see how much is left or get to the last bit).
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Reviewed in the United States on February 26, 2026
★★★★★ 3
Not Hydrating Enough
Style: Updated Formula
Non greasy but is not moisturizing enough for my dry eczema prone skin.
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Reviewed in the United States on May 23, 2026




