Walex Citra-Pak RV/Marine Holding Tank Deodorizer Drop-Ins - Waste Breakdown & Odor Control, Cleans Holding Tank & Sensors, Biocide-Free, Treatment for RVs, Boats, & Portable Toilets - Citrus, 30 Pack

This worked great on our camping trip! We camped for a week in our bus and had zero issues! No gross smells coming from the toilet, just plop it in and it’s gets the job done right away.

These packs are great! They help keep my tank odors down, especially during the summer in Arizona. After I empty my tank and do a quick rinse. I fill toilet with water and 1 pod, empty, fill again with water and empty. I repeat 1-2 more times, using 2-3 pods total each week. I like the orange ones and I'm trying the lavender ones next!

09/18/25 Excellent product. Was given a bag of these by neighbor that also has a large RV, him telling me these are the best. I agree. Now I do not thoroughly inspect the waste tank, but no clogs and a fast discharge of contents for the past (nearly) 2 years. gvm

No smell since we started using this product. Are there others that work better? Not sure because this one works great and it is easy to use with no mess or fuss.

Did the job in our RV.

This product is great and it helps keep my tank from smelling funky during the summer.

Love it

Didn't really like these; will order liquid in the future. They ended up a big mess because the plastic coating disintegrated and resulted in a powdery mess. They weren't very effective either (I had scooped some out with a scooper instead of just "tossing" it in.

Muy rico el aroma y efectivo