Walex Porta-Pak Holding Tank Deodorizer Drop-In Review

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A walex porta-pak set against a dark blue background.

RV holding tanks aren’t something people enjoy dealing with, and yet you don’t have a choice if you own an RV. While it is undoubtedly more fun to spend your time dreaming up all of the adventures you have planned, neglecting your holding tank can leave you in a bad situation. The Walex Porta-Pak can make this a hassle-free maintenance task. Let’s take a closer look at how they help.

Walex Porta-Pak Overview

Walex Porta-Paks are portion-controlled packets that quickly dissolve in your holding tank. These pods work fast and are super easy to use.

Simply place one pack into your holding tank for up to seven days of odor control. Their non-staining dye formula claims to be the strongest odor control formula available to RVers.

Not only do these packs provide much-needed odor control for your holding tanks, but they also help break down waste and toilet paper in your black tank.

Successful breakdown of waste in your holding tanks is an integral part of the process, saving you from a frustrating build-up later

Walex PPSGBG Porta-Pak Commercial Holding Tank Deodorizer Drop-Ins, Sunglow Scent (Pack of 50)
  • Number 1 portion contol deodorizer in the world
  • Unbeatable odor prevention

Why You Need a Holding Tank Deodorizer

Both black and grey holding tanks can benefit from Walex Porta-Pak holding tank deodorizers.

We all know the black tank can get stinky, but even your grey tank can benefit from odor control.

Food particles, oil, and dirty dishwater all contribute to an unpleasant grey tank smell. Walex Porta-Paks help keep those smells in check. 

Our Favorite Features of Walex Porta-Pak Drop-Ins

Walex Porta-Pak drop-ins aren’t the only product on the market that aims to deodorize holding tanks, but we think they’re a great choice.

Here are a few reasons why these should make it onto your list of RV essentials. 

Easy to Use Portion Controlled Packs

There’s no guessing when it comes to how much to use. The portion-controlled packs allow you to simply drop a pack in and go on with your day.

No measuring or pouring is needed. Each packet will perform optimally for up to 40 gallons.

Deodorizes and Breaks Down Waste

Walex Porta-Pak keeps your holding tanks working well by breaking down waste. Dumping RV holding tanks can be frustrating when you get clogs; using Porta-Paks can help prevent them. 

There’s no way around it; no one enjoys having foul smells drift back into the RV from the holding tanks.

Sadly, it’s only a matter of time without a deodorizer until you scrunch your nose, wondering what that awful smell is. Walex Porta-Pak drop-ins help to avoid those odors from intruding on your trip. 


Walex Porta-Pak drop-ins aren’t for every situation. Unfortunately, there are always cons with any product. Let’s see why this might not be the right product for you. 

Not Great for Small Tanks or Cassette Toilets

If you travel with a small holding tank or a cassette toilet, this isn’t the product for you.

Because these are pre-portioned packs meant for 40 gallons, they can overwhelm small tanks.

This formula isn’t meant for cassette toilets due to the small tank as well. 

Pro Tip: You don’t need to use expensive RV toilet paper. Check out these RV Toilet Paper Alternatives You’ll Wish You Used Sooner.

Walex Porta-Pak Alternatives

Because we know that the Walex Porta-Pak isn’t the right choice for everyone, we’ve gathered a few alternatives for you. Take a look at a few other options you might want to consider. 

Camco TST Drop-Ins

Camco TST MAX Camper / RV Toilet Treatment Drop-INs - Control Unwanted Odors & Break Down Waste and Tissue - Safe Septic Tank Treatment - Orange Scent, 30-Pack (41183)
  • TOILET DEODORIZER WITH REACTIVE ODOR-ELIMINATING TECHNOLOGY: Experience a powerful RV odor eliminator that stops RV...
  • SUPERIOR FORMULATION, UNMATCHED PERFORMANCE: Get exceptional results with TST MAX RV tank treatments. The advanced...

Camco is known for producing great RVing products. The TST Drop-Ins are convenient pre-portioned packs. These citrus fragranced packs work to reduce build-up and odor in tanks up to 40 gallons. 

Happy Campers

Happy Campers RV Toilet Treatment - 64 Black or Gray Holding Tank Deodorizer Treatments for RVs
  • ODOR FREE: Eliminates odors in the RV holding tank. Absolutely no chemical or sewer smell.
  • Septic tank friendly

Happy Campers works by actually tackling the issue of holding tank build-up and odors without just masking it. It uses an organic formula that eliminates orders at the source instead of covering them with fragrance. This product provides a scoop and directions for how much product to use for your situation. It topped our list of the best black tank treatments.  

Dealing with RV holding tanks is never anyone’s idea of a great time, but Walex Porta-Paks can make the process a bit easier. How do you currently keep down smells in your RV?

Last update on 2024-06-12 / Affiliate links / Images from Amazon Product Advertising API

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