Black tank

Pure RV Black Tank Treatment, 32 fl oz

Liquid enzyme treatment for RV waste holding tanks, designed to help break down solid waste and toilet paper and control tank odors.

For routine black-tank maintenance and odor control
Use 4–6 oz with 1–2 gallons of water in an empty tank
32 fl oz per bottle; approximately 5–8 treatments
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$47.99$59.98
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Measured use
4–6 oz per treatment
Routine tank care
Waste and odor control
30-day promise
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Reviews

What customers are saying

4.3 out of 5 on Amazon · 90 ratings · Read all reviews
★★★★★

Worked perfectly

“Was having tank odors even though we were cleaning regularly and this fixed it”

Judy S.Black Tank Treatment · Verified Amazon purchase
★★★★★

This cleaner is 👌🏼👌🏼👌🏼

“This black tank cleaner is 👌🏼👌🏼👌🏼 would highly recommend. Lived in my camper April-August and it definitely worked well.”

Amazon CustomerBlack Tank Treatment · Verified Amazon purchase
★★★★★

Handle with care

“It only takes a little for this to work and it works well”

Angelique & Brian G.Black Tank Treatment · Verified Amazon purchase
★★★★★

It worked on wet naps

“We had some wet wipes go down the RV tank. I poured this in and left it for 2 days. I use a macerator to empty and those wet naps kept clogging it. No problems at all after using this”

Melinda M.Black Tank Unclogger · Verified Amazon purchase
★★★★★

It seems to have fixed my problem!

“So far, so good! I was having a bad smell from my kitchen sink. I started using this tank treatment, and I haven't noticed any smell at all.”

Aircraft800Grey Tank Treatment · Verified Amazon purchase
★★★★★

This RV shower cleaner works great!

“This RV Shower Cleaner is awesome! Removed the rust-colored stains in seconds.”

TerryShower Cleaner · Verified Amazon purchase
★★★★★

Recomend for clogs and cleaning sensors it really works!

“...when it comes to cleaning the black tank I put it in right before I have to dump the black tank and it does its job and I only have to flush black tank once or twice instead of having to do it a million times to get it clean”

Rebecca T.Black Tank Unclogger · Verified Amazon purchase
★★★★★

Rv Grey water tank treatment

“Works great! Took care of the smell immediately”

Cynthia J.Grey Tank Treatment · Verified Amazon purchase
★★★★★

Great space saver

“This toilet brush is great and since it is flat it takes up very little room in our trailer. We used the holder behind the toilet and it works great. It was easy to assemble.”

TraciToilet Brush · Verified Amazon purchase
★★★★★

Worked great for us on high iron water stains.

“...The shower floor, wall sinks all were turning yellow from the iron contents. We use this once a week and wiped with a soft sponge 🧽 and it’s white as new!”

TMD O-H-I-OShower Cleaner · Verified Amazon purchase
★★★★★

It works!

“So far it seems to be unclogging our RV tank with one application. It also doesn't have a bad smell.”

Elizabeth S.Black Tank Unclogger · Verified Amazon purchase
★★★★★

Works Great!!!

“...the plumber told us our gray tank was clogged up three years after we bought it. I bought Pure Water tank treatment and the shower and kitchen sink now drain perfectly.”

Love2flyncGrey Tank Treatment · Verified Amazon purchase
★★★★★

No alcohol or ethanol

“This is the stuff my rv tech recommended. Put it into your pipes before filling the tanks.”

Paul J.RV Antifreeze · Verified Amazon purchase
★★★★★

I like

“A great help for cleaning the bathrooms. Just 5 minutes and the job is done.”

YudeShower Cleaner · Verified Amazon purchase
★★★★★

Worked well

“Worked well after one treatment”

Scott A. H.Black Tank Unclogger · Verified Amazon purchase
★★★★★

Antifreeze

“I used it to protect the pipes and water during the winter, and I liked that it's non-toxic and safe for drinking water.”

StephanieRV Antifreeze · Verified Amazon purchase
★★★★★

Good!

“Good for my class B RV.”

CWToilet Brush · Verified Amazon purchase
★★★★★

Antifreeze

“I bought this antifreeze to prepare my RV now that the temperatures are starting to drop, and I was really satisfied with the result.”

Cristina F.RV Antifreeze · Verified Amazon purchase
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$29.99
How to use
Empty and close the tank
Empty the black tank and close the dump valve.
Add water
Add 1–2 gallons of water to the empty tank.
Measure and flush
Pour 4–6 oz of treatment into the toilet and flush. Follow the precautions on your bottle and your RV manufacturer’s instructions.
The details
Size 32 fl oz per bottle
Coverage Approximately 5–8 treatments per 32 fl oz bottle, using 4–6 oz per treatment
Formaldehyde None

Common questions

Pure RV Black Tank Treatment is a liquid treatment for RV and camper waste holding tanks. Its enzyme formula is designed to help break down solid waste and toilet paper and control tank odors.
Empty the black tank and close the dump valve. Add 1–2 gallons of water to the empty tank, then pour 4–6 oz of treatment into the toilet and flush. Follow the precautions on your bottle and your RV manufacturer’s instructions.
Each bottle contains 32 fl oz. At 4–6 oz per treatment, that is approximately 5–8 treatments per bottle, depending on how much you use.
The treatment is designed to help remove waste buildup from tank surfaces. It does not repair a failed sensor or electrical fault. If the reading stays incorrect after cleaning, check the sensor system using your RV manufacturer’s guidance.
No. Pure RV Black Tank Treatment is formulated without formaldehyde.
Do not mix the treatment with bleach or other cleaners. Use it according to the bottle directions.
Black Tank Treatment is intended for waste and toilet paper in the toilet holding tank. Grey Tank Treatment is intended for buildup from sinks and showers, including grease, soap and food residue. Follow the directions for the product and tank you are treating.
Black Tank Treatment is intended for routine tank maintenance and odor control. Black Tank Unclogger is the separate product intended for accumulated waste, sludge and pyramid plugs. Each has its own directions and treatment time.
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