A Simple Solution for Cleaner, Better-Smelling RV Holding Tanks
One of the most common questions we hear from RV owners is:
“How can I keep my black and gray tanks from smelling?”
The answer starts with proper tank maintenance and using a quality holding tank treatment.
At California RV Specialists, we’re always looking for products that help RV owners maintain their coaches, and Camco® TST PRO Holding Tank Treatment Drop-INs are a great option for helping control odors while supporting healthy waste breakdown in both black and gray water holding tanks.
Whether you’re camping for the weekend or living the RV lifestyle full-time, proper tank care can make your travels much more enjoyable.

Why Use a Holding Tank Treatment?
Your RV’s holding tanks are designed to collect waste until you’re ready to empty them.
Without proper treatment, waste can begin producing unpleasant odors while solids may not break down as efficiently.
Using a quality holding tank treatment helps:
- Control unwanted odors
- Support waste digestion
- Help keep tank sensors cleaner
- Reduce buildup inside holding tanks
- Improve overall tank performance
- Leave your RV smelling fresher
Routine tank maintenance is one of the easiest ways to improve your RV ownership experience.
Why We Like Camco® TST PRO Drop-INs
Camco has been a trusted name in RV products for decades, and their TST PRO Drop-INs feature a new bio-enzymatic formula designed to outperform traditional holding tank treatments.
The convenient drop-in packets make treatment quick, clean, and easy.
Simply drop one into your toilet with the recommended amount of water, and you’re ready for your next adventure.

Features of Camco® TST PRO
Powerful Bio-Enzymatic Formula
The advanced formula helps digest waste naturally while reducing odors in your holding tanks.
Treats Black & Gray Water Tanks
Designed to help maintain both black and gray water systems for a fresher RV.
Easy Drop-In Convenience
No measuring. No spills. No mess.
Just drop it into the toilet and follow the recommended water usage.
Fresh Pine Scent
Helps leave your RV with a clean, refreshing pine fragrance instead of unpleasant holding tank odors.
Septic Safe
Safe for septic systems when used as directed.
Proudly Made in the USA
Manufactured in the United States using quality ingredients and high manufacturing standards.

Proper Tank Maintenance Is Still Important
While holding tank treatments are an excellent maintenance product, they work best when combined with good RV habits.
We recommend:
- Using plenty of water when flushing.
- Emptying tanks completely before storing your RV.
- Flushing black tanks thoroughly after dumping.
- Cleaning tank sensors periodically.
- Inspecting dump valves and seals.
- Avoiding products that aren’t designed for RV holding tanks.
A holding tank treatment should be part of your regular maintenance routine—not a substitute for proper tank care.
Common Holding Tank Problems We See
At California RV Specialists, we’ve helped thousands of RV owners diagnose holding tank issues, including:
- Persistent tank odors
- False tank sensor readings
- Clogged black tanks
- Waste buildup
- Slow draining tanks
- Leaking valves
- Damaged termination plumbing
- Improper tank flushing
Many of these problems can be minimized with regular maintenance and quality tank treatment products.
Why Choose California RV Specialists?
Since 2003, California RV Specialists has helped approximately 1,200 to 1,500 RV owners every year maintain, repair, and upgrade their RVs.
We believe that preventative maintenance products like Camco TST PRO Holding Tank Treatment help RV owners protect their investment while making camping more enjoyable.
If you have questions about your RV’s holding tank system, black tank maintenance, gray tank odors, or plumbing repairs, our experienced technicians are here to help.
Stop By and Learn More
Looking for an easy way to keep your RV’s holding tanks cleaner and smelling fresh?
Ask us about Camco® TST PRO Holding Tank Treatment Drop-INs during your next visit to California RV Specialists.
A little preventative maintenance today can help you enjoy a cleaner, fresher RV tomorrow.
California RV Specialists
Helping RV Owners Since 2003
A big thank you to our Camco representative, David Parker, for introducing us to the Camco TST PRO Holding Tank Treatment Drop-INs.
We’re always looking for products that help RV owners maintain their coaches, and after learning more about TST PRO’s new bio-enzymatic formula, easy drop-in application, and odor-fighting performance, we’re excited to recommend it to our customers.
If you’re looking for a simple way to help keep your black and gray holding tanks fresh while supporting waste breakdown, stop by California RV Specialists and ask us about Camco TST PRO.
Thanks again, David, for your continued support and for helping us bring quality products to the RV community!