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Happy Campers

Happy Campers RV Toilet & Holding Tank Treatment – 18 Treatments

  • Based on 31,583 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Thursday, Sep 10
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Size: 18 Count (Pack of 1)


Features

  • Powerful RV toilet treatment and black tank odor control: Happy Campers is a concentrated RV toilet treatment, RV black tank treatment, and RV holding tank treatment that helps eliminate stubborn odors at the source. Keeps black and gray tanks fresh after every dump while supporting a cleaner, better-performing holding tank system.
  • Ultra-Concentrated RV tank treatment prevents tank problems before they start. Prevents waste from building up and sticking to holding tank walls and sensors while keeping RV waste flowing smoothly for every dump. Also works as an effective RV gray tank treatment to help keep grease, oils and sludge from creating bad tank odors.
  • Safe for RV and septic systems: Mineral-based RV septic tank treatment that is safe for black tanks, gray tanks, septic systems, travel trailers, fifth wheels, motorhomes and boats. A dependable camper toilet treatment and camper tank treatment for everyday RV maintenance.
  • Long-lasting odor control with every treatment: One scoop treats up to 40 gallons while helping control odors between dumps unlike at RV toilet enzyme that needs constant dosing. Use Happy Camper regularly as your RV tank deodorizer and black tank deodorizer once after each dump to help reduce buildup and maintain cleaner, fresher holding tanks making it an RV essential that doesn't require as many repeat doses as competitors products.
  • Designed for cleaner rv tanksnot as a rapid rv waste digester: Happy Campers is a concentrated RV tank treatment that helps control odors, reduce buildup, and support long-term holding tank maintenance. Unlike rv enzymes treatment for black tank that focus on rapid waste digestion, our mineral-based formula is designed to help keep tanks cleaner trip after trip.
  • Multi-use RV holding tank treatment: Happy Campers works as an RV toilet treatment, camper tank treatment, and marine holding tank treatment for black tanks, gray tanks, and portable toilets. Trusted for routine holding tank maintenance, dependable odor control, and cleaner tanks wherever your adventures take you.

Description

Happy Campers — Easy and Affordable Happy Campers holding tank treatments offer a powerful and cost effective solution, based on cost per treatment, for eliminating odors and breaking down waste in RV black and gray tanks. Unlike enzyme-based treatments, Happy Campers uses a mineral-based formula that works effectively even in extreme temperatures and prevents clogs without harming your plumbing. It's trusted by full-time RVers for its reliability, long-lasting results, and ability to keep tanks odor-free—even during dry camping. Happy Campers RV holding tank treatment is designed to control rv toilet and tank odors very effectively as well as making sure your tanks remain clean and in peak performance for long-term use. The key is to make sure your black and gray tanks are clean prior to using, otherwise your maintaining a tank that already has problems and this won't make you a Happy Camper. Always start with a clean, fresh tank prior to treating with Happy Campers for odor free travel. If you're experiencing recurring RV toilet or black tank odors, dirty tank sensors, heavy buildup, or flushing problems that don't improve with routine maintenance or holding tank treatments, your holding tank may need a deep cleaning. Happy Campers Extreme Cleaner is designed to remove years of accumulated residue and help restore your holding tank before returning to regular maintenance with Happy Campers Holding Tank Treatment. Use 1/4 - 1/2 Container per tank cleaning with hot water. If your tank problems continue after using Happy Campers, the treatment may not be the cause. Persistent odors, inaccurate sensors, or poor tank performance are often signs of an underlying issue such as existing buildup, inadequate water usage, a blocked roof vent, or a compacted waste blockage. Identifying the cause can help restore your tank and get you back to camping. All of these issues can usually be corrected by deep cleaning the tank, unless you have a blocked sewer vent (check). Happy Campers helps break down waste and most regular home toilet papers to support smooth waste flow and cleaner tank emptying and more comfort for your bottom. Unlike products focused on rapid liquefaction, our goal is long-term tank performance by helping reduce residue that can contribute to buildup, odors, and sensor problems. The result is cleaner tanks, easier dumping, and RV adventures without tank problems. The proof is what comes out of your tank and not left behind. Happy Campers is unlike the rest of the RV and marine holding tank treatments available. It's mineral based micronutrient treatment specifically formulated to work in extreme temperatures both cold and hot just like the places RVers travel in summer and winter. Happy Campers is formulated with a proprietary blend of natural minerals and micronutrients. It doesn't contain harsh chemicals like formaldehyde, bronopol or forever chemicals. RV and Boat waste system friendly. Septic Safe ingredients for smooth dumps and clean tanks with zero odor. Trusted by thousands of active RV owners. What is Happy Campers RV Holding Tank Treatment? Happy Campers is a highly concentrated and proprietary blend of minerals and micronutrients. It's a water-activated powder treatment designed to eliminate odors and break down waste in RV and marine black and gray holding tanks. How do you use Happy Campers Tank Treatment? Just add One scoop (or one treatment) equals 2 tablespoons after every tank dump. Use one treatment per 40 gallons of holding tank capacity. For example; if you have an 80 gallon tank, you would use 2 scoops with 5-6 gallons of water to prime tank. Is Happy Campers safe for RV plumbing and septic systems? Absolutely. Happy Campers is safe for RV plumbing and home septic systems. It contains no formaldehyde or harsh chemicals that would damage seals. What if Happy Campers Doesn't Work? We stand by our product and customers. However, if you try the treatment and still have odor problems, this is most commonly solved by adding more water or making sure to deep clean your tank prior to using the regular treatment. Does Happy Campers work in all types of campers, holding tanks, and cassette toilets? Yes. It works for all marine, RV, camper and portable tanks and toilets. For smaller tanks (e.g., a 6-gallon cassette toilet), use a reduced amount, such as 1/4 to 1/2 scoop, mixed with 1-2 gallons of water. Adjust as necessary. Because your journey deserves to be as fresh and exciting as the destinations you explore Inspired by the beauty of nature and the freedom of the open road, Happy Campers Holding Tank Treatment was born. We set out on a mission to revolutionize the way RV'ers experience waste management, creating a product that not only eliminates odors but also promotes a healthier and more sustainable lifestyle. Join the Happy Campers family and connect with fellow RV enthusiasts who share your passion for adventure.

Product Dimensions ‏ : ‎ 3.5 x 4.25 x 4.5 inches; 1.13 pounds


Item model number ‏ : ‎ HC-18-oz


Date First Available ‏ : ‎ October 19, 2011


Manufacturer ‏ : ‎ RV Concepts


Best Sellers Rank: #398 in Automotive (See Top 100 in Automotive) #7 in RV Sewer Chemicals & Cleaners


#7 in RV Sewer Chemicals & Cleaners:


Customer Reviews: 4.7 4.7 out of 5 stars (31,583)


Item Form: Granule


Scent: Unscented


Specific Uses For Product: RV Holding Tank


Surface Recommendation: Toilet


Special Features: Compatible with black and gray holding tank systems, Concentrated mineral formula, Measured dosing scoop, Safe for RV septic seals and valve components, Tested for high-temperature RV conditions


Product Benefits: Controls black & gray tank odors, Helps prevent waste buildup & clogs, Promotes smooth waste flow, Safe for black, gray & septic systems, Supports cleaner tank sensors


Item Volume: 18 fluid ounces


Unit Count: 18 Count


Number of Items: 1


Item Weight: 1.1 pounds


Size: 18 Count (Pack of 1)


Brand Name: Happy Campers


Manufacturer: RV Concepts


UPC: 186045000028


Model Number: HC-18-oz


Part Number: HC-18


Material Features: Fragrance Free


Material Type Free: Odor Free


Allergen Information: Allergen-Free


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Sep 10

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Best tank treatment I've found for smells.
Size: 64 Count (Pack of 1)
My family and I have been seasonally camping for 8 years now. When it comes to black tank treatments we've tried quite a few different ones. We started with those convenient lavender pods that did almost nothing. Eventually, I switched to happy camper and used it for years with great results. Recently, I was watching a video on YouTube that was doing a head to head test on several methods. It showed Happy camper not really breaking down solids like a couple other brands did. So this year, I used the last of my Happy Camper and bought liquified rv tank treatment in Orange scent. It definitely does break down the solids as advertised but unfortunately, for the first time since we started using happy camper, the black tank smell has returned. This never happened with Happy Camper. With that said, I kept my tank pretty clean and still do today. Every couple weeks doing a deep clean. Smell still persists. I'm going back to Happy Camper and I'll save the Liquified for an occasional clean of the black tank walls. If you're on the fence, go with this RV tank treatment. You can flush out solids, harder to flush out smells. This stuff rocks!! ... show more
Reviewed in the United States on August 10, 2026 by David
    • Happy Campers made this grown man cry.
Size: 18 Count (Pack of 1)
I have been living full time in my RV for about a year and a half now, and I have tried everything under the sun to fight back at the assault on my nostrils every time I flush my toilet. I’m talking heavy, toxic, nose hair burning, stomach churning stench worse than anything I have ever had the displeasure of encountering in my lifetime. NOTHING WORKED. Until now!! I’m kicking myself for waiting so long to try this product. I saw it was heavily recommended and I was a fool to set it on the back burner for so long. I’m honestly in disbelief. I had given up hope and just assumed I could never invite anyone over due to the constant embarrassing sewage smell that infested my trailer. Happy Campers has truly changed my life enough to make this grown man cry. There’s not even a hint of stink in my home now and it even cleared the dreaded pyramid that was forming in less than two days. I couldn’t be more pleased with this purchase and am happy to pay the price for such an incredible product. Thank you so much for making this camper happy!!! ... show more
Reviewed in the United States on June 21, 2026 by Ivan
    • 5 year usage review.
Size: 64 Count (Pack of 1)
I have been using this product for the past 5 years, months and months of use and dozens of tank dumps. It is exceptional. I don't know how it works but it does and it works very well. 5 stars without hesitation. I add a full scoop to 3-5 gallons of water and add it to the black tank (and often the grey tank as well) prior to every use. We strictly use rv toilet paper. There is a total of 5 people using our rv toilet, myself my wife and 3 kids. We do use the RV toilet for #2, especially the kids. We have a rule where we use additional water to flush a #2. I use a black tank rinse nozzle (built into my RV) after each dump. After 5 years all of my tank sensors still work perfectly. We have never had an issue with foul smell or odor, even in hot weather. No toilet issues whatsoever. (TMI warning) I have a clear elbow which I use to dump the tanks, so I see what comes out. It looks like chocolate milk, and I don't see any noticeable solids bigger than about an inch. I never see any TP either (which means it is completely broken down). I think these results speak for the effectiveness of this product. I highly recommend it (along with degradable rv toilet paper and a little extra water with each #2 flush). ... show more
Reviewed in the United States on July 1, 2026 by Matt P.
    • Not sure why you are reading this, and not just buying Happy Camper? Seriously It's THAT good!!!!
Size: 64 Count (Pack of 1)
40 Years ago I started camping. I have owned pop-ups, converted school buses, park models, tag alongs and truck campers. Black tank odors have always been just a little bit of a problem. Not so much that you could not use the camper, but definitely an unpleasant welcome when you opened the door to the little room. A few years back I purchased a slide in camper for some more personal use and was not pleased with how the tank smelled. I have gone through all of the chemicals at Wal-Mart and the camper stores. I have flushed, cleaned, thrown bags of ice in there, you name it. Odor was always worse when the tank was just emptied. There was obviously trapped debris in the corners someplace. On a whim (And by reading the reviews) I opted for a small tub of Happy Camper to see what it would do. (That was my mistake. I should have gone ahead and ordered a whole case to make sure I had plenty on hand, as I have shared it with the rest of the world) I went for a triple dose the first time and flushed it back with a pail of fairly warm water. Drove around for a little bit and made sure things were good and mixed up. Then filled the tank from the garden hose. Following day I went to the local dump station to see what we had (This station is a dump ramp, not a tube. So you get the privilege of seeing everything one more time) I was shocked that I saw liquid. Almost entirely liquid. However it was severely discolored from what I know was in there. I was a little confused about the content. However went through my process of starting the tank back up again. I have never had a tank odor SINCE! I have also not seen solids coming from my tanks EVER!!! Fast forward 3 years of What I would consider abnormally heavy use for a non-full time RVer and my toilet valve decided it wanted to wash the back of my head for me. It was immediately following a heavy weekend of camping with 5 people using the "Facility" inside my slide in. I got home and realized that it was broken and had to be replaced (For anyone that has not had to do this. The toilet has to be removed from the 4" hole in order to change that valve) I had not dumped yet and did not have the time to get there before hand. Thought I would suck it up and just deal. I unbolted the toilet from the unit and with GREAT hesitation lifted it off of the gaping hole in the floor that leads straight into the black tank. Being prepared I was going to jam something over the hole as soon as possible to minimize the gag factor. (This was mistake number 2) To my immense surprise. there was NO ODOR from my tank. I mean NONE! There was more odor from the dirty floor than there was from the tank. To test my theory I left the hole open overnight while waiting for my part to come in and replace it. Hesitantly the following morning, I reached for the door of the slide-in figuring that I was going to be assaulted by a nose full of nasty. NOTHING, NADA, ZIP. If I could invent Smell-A-Vision, this would have been VIRAL! Open black tank, 24 hours in the summer and NO ODOR inside the camper. I have been singing this stuffs praises for 3 years not. Have probably given out 50 - 60 doses to now believers and will never use anything else. EVER. A previous poster left a very detailed description of how to prepare a tank. Given those instructions, you will be a much happier camper. This is a snippet from a user named "The Honest Truth" This is NOT MY LIST, Although I have always followed it pretty closely with a couple of minor changes. This is foolproof in my experience. --Snippet from The Honest Truth 1. Dump only when tanks are 2/3 or more full. I try to get mine s full as possible by adding pure old tap water if necessary before dumping. The more water will certainly always help move any sediments. 2. There has been zero odors of any kind using this method. 3. You can use any brand of toilet tissue you like using these instructions. It truly liquefys everything! 4. Has worked for myself and friends in all temperatures below zero and 110+ climates. 5. I think you'll be quite happy with the results and please pass it on to other RVers if you get the chance. 6. Sensors make take few cycles to begin reading properly and to be clean enough to read properly, but it will happen. I hope my experiences help a few folks out there. Have a good day. --End Snippet. Good Luck and Happy Camping. ... show more
Reviewed in the United States on July 16, 2018 by Glenn
    • Great product!
Size: 18 Count (Pack of 1)
Wonderful, no weird perfume, does the job!
Reviewed in the United States on July 23, 2026 by Customer
    • Great product !
Size: 18 Count (Pack of 1)
Been full time Rving for over 12 years and this is by far the absolute best holding tank treatment I have came across and I have used them all. I have been using this for a couple of years now and get 0 tank odors when dumping even in the hot summers. I would recommend giving this a try and I’m sure you will never go back to any other treatment. I give this product 5 stars and would give more if available. ... show more
Reviewed in the United States on August 3, 2026 by chris
    • This is the one that works
Size: 64 Count (Pack of 1)
Have camped for decades and used many failed products. This Happy Camper really works to keep odor down . When tank is near full it will start to smell and will smell while dumping more product could be added if you have to wait to dump a 3/4 or more tank. Overall it is the best we’ve used. We use it when State Park camping or when we don’t have sewer on site. We also use it when traveling. When we have sewer on site we use our tank rinser and don’t need products. ... show more
Reviewed in the United States on August 17, 2026 by Wildflower
    • Great Odor Control
Size: 64 Count (Pack of 1)
It works period. I use this wonderful product on my boat that has a 60 gallon holding tank. I live on the boat during the summer and pump out once a week. There are absolutely no odors. I recommend Happy Campers to everyone at the marina.
Reviewed in the United States on July 21, 2026 by Roberto

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