---
product_id: 28055624
title: "Bio-Pak Black Holding Tank Deodorizer & Waste Digester Drop-Ins - Advanced Enzyme Formula for Rapid Breakdown of Waste & Paper, Removes Odors & Cleans Tank; Tropical Breeze, 10-Pack"
brand: "walex"
price: "S$35"
currency: SGD
in_stock: true
reviews_count: 8
url: https://www.desertcart.sg/products/28055624-bio-pak-black-holding-tank-deodorizer-and-waste-digester-drop
store_origin: SG
region: Singapore
---

# Eco-friendly, septic-safe & residue-free Versatile for 2.5-40 gallon tanks, perfect for RV & marine use Advanced enzyme formula for rapid waste breakdown Bio-Pak Black Holding Tank Deodorizer & Waste Digester Drop-Ins - Advanced Enzyme Formula for Rapid Breakdown of Waste & Paper, Removes Odors & Cleans Tank; Tropical Breeze, 10-Pack

**Brand:** walex
**Price:** S$35
**Availability:** ✅ In Stock

## Summary

> 🌴 Keep it fresh, clean, and worry-free on every adventure!

## Quick Answers

- **What is this?** Bio-Pak Black Holding Tank Deodorizer & Waste Digester Drop-Ins - Advanced Enzyme Formula for Rapid Breakdown of Waste & Paper, Removes Odors & Cleans Tank; Tropical Breeze, 10-Pack by walex
- **How much does it cost?** S$35 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/28055624-bio-pak-black-holding-tank-deodorizer-and-waste-digester-drop)

## Best For

- walex enthusiasts

## Why This Product

- Trusted walex brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Swift Waste Breakdown:** Powerful enzymes liquefy waste & toilet paper fast, keeping tanks clog-free and sensors accurate.
- • **Odor Control That Works:** Tropical Breeze scent neutralizes odors without overpowering your space—no more embarrassing smells on the road.
- • **Trusted Quality Since 1987:** Made in the USA by Walex, a leader in sanitation innovation with over 35 years of expertise.
- • **Eco-Conscious & Septic Safe:** Formulated to protect septic systems and the environment—no harsh chemicals, no residue.
- • **Universal Tank Compatibility:** Effective for holding tanks from 2.5 to 40 gallons, ideal for RVs, boats, and portable toilets.

## Overview

Walex Bio-Pak Black Holding Tank Deodorizer & Waste Digester Drop-Ins use an advanced enzyme formula to rapidly break down waste and toilet paper in holding tanks from 2.5 to 40 gallons. Featuring a tropical breeze scent, these eco-friendly, septic-safe tablets neutralize odors and keep tanks clean without harsh chemicals or residue. Perfect for RVs, boats, and portable toilets, this 10-pack of drop-ins is made in the USA by a trusted sanitation innovator since 1987.

## Description

New all-natural waste digester- an advanced enzyme system developed by Walex R&D deodorizes and breaks down waste in a manner beneficial to septic tanks, ideal for RVs and boats.

Review: Work fine - We bought these to use in a camp toilet. These work fine, and the scent does not fill the space where the toilet is set up.
Review: Works well with out added chemicals - Excellent product. I highly recommend it. Manages oder well and turns everything to liquid for draining, with out chemicals that cannot be removed in the sewage treatment process. We initially had minor odor issues, but have realized that with any cleaner all fans sucking out air from the camper will suck out air form the toilet into the camper. We also realized that the Thetford toiled provides a helpful sealing action when flushing. So in addition to using this or any product: turn off all of the out take fans and close the lid when flushing. I It seems to work well for 5 to seven days, the maximum I wait before emptying the tank. If temperatures are 95 and above for several days you may want to use Porta-Pak a chemical based produce. Finally, a note on the use of bio-pad and cleaning agents: Bleach based products and many other chemical based products will kill the enzyme that is the basis of this product. I use Green Works and this seems to be friendly enough. I use other products to clean the toilet just before I dump. I suspect that some to the less positive reviews may relate to this issue. If you are not going to use "chemical" bast agents you have to use similar cleaners. Most additives on the market will reduce the odor associated with raw sewage, but none willl make it smell like a bed of flowers. This product does a great job and it will not have to be removed during sewage treatment. (In most cases they are not removed, just diluted.) Nor will it harm septic systems. (A final note: When talking with manufactures about sented products they note that the scents are for the customers when they open the package. The scents are totally lost when the product is sent into the tank.)

## Features

- NATURAL WASTE BREAKDOWN - Swiftly breaks down waste and stubborn toilet paper, keeping your holding tank sensors working effectively and system running smooth. No need for RV-grade toilet paper.
- ENZYME HOLDING TANK DEODORIZER - Bio-Pak marine and RV holding tank deodorizer tabs contain powerful enzymes that liquefy waste and tackle unpleasant smells. Just drop it in, non-staining color.
- VERSATILE FOR ALL TANKS - Our marine and RV tank deodorizer for black tanks cleans tanks from 2.5 gallons - 40 gallons. Ideal for RVing, boating, boondocking, and portable camping toilets.
- TROPICAL BREEZE 10 PACK - Say goodbye to embarrassing odors with our marine and RV drop ins for toilets. Plus, our boat and RV toilet deodorizer is septic system-safe and campground-friendly.
- MADE IN USA - Walex has been a global leader in developing and manufacturing premium odor control and sanitation products since 1987.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00T36JF1W |
| Best Sellers Rank | #4,195 in Automotive ( See Top 100 in Automotive ) #12 in RV Sewer Chemicals & Cleaners |
| Brand | Walex |
| Brand Name | Walex |
| Contains Liquid Contents? | Yes |
| Customer Reviews | 4.6 out of 5 stars 9,235 Reviews |
| Global Trade Identification Number | 00742693115318 |
| Included Components | 10 packets per bag |
| Item Form | Tablet |
| Item Height | 9.5 inches |
| Item Type Name | Bio-Pak Tropical Breeze |
| Item Volume | 1 Gallons |
| Item Weight | 0.3 Ounces |
| Manufacturer | Walex Products Company, Inc |
| Material Feature | Eco-Friendly |
| Material Features | Eco-Friendly |
| Number of Items | 1 |
| Scent | Tropical Breeze |
| Special Features | Residue Free |
| Specific Uses For Product | Toilet |
| Surface Recommendation | Toilet |
| UPC | 742693115318 |
| Unit Count | 10.0 Count |

## Product Details

- **Brand:** Walex
- **Item Form:** Tablet
- **Scent:** Tropical Breeze
- **Specific Uses For Product:** Toilet
- **Material Feature:** Eco-Friendly

## Images

![Bio-Pak Black Holding Tank Deodorizer & Waste Digester Drop-Ins - Advanced Enzyme Formula for Rapid Breakdown of Waste & Paper, Removes Odors & Cleans Tank; Tropical Breeze, 10-Pack - Image 1](https://m.media-amazon.com/images/I/81Od6zLQpZL.jpg)

## Available Options

This product comes in different **Size, Scent** options.

## Questions & Answers

**Q: how much gallons could i treat with this package?**
A: The packaging says that each Bio-pak treats up to a 40-gallon waste tank.

**Q: How many treatments are in this pack?**
A: 10 Drop ins

**Q: Is this product available in mini pods?**
A: One size only

**Q: Can you use these in a 3 gallon porta potty tank??**
A: The pods once dropped in are good for 7 days.  Personally, for a 3 gallon tank, I would use a liquid same brand or another the liquids come with a measuring spout or cap. That way you can add an amount for 3 gallon tanks.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Work fine
*by L***Y on November 20, 2025*

We bought these to use in a camp toilet. These work fine, and the scent does not fill the space where the toilet is set up.

### ⭐⭐⭐⭐⭐ Works well with out added chemicals
*by R***L on August 9, 2018*

Excellent product. I highly recommend it. Manages oder well and turns everything to liquid for draining, with out chemicals that cannot be removed in the sewage treatment process. We initially had minor odor issues, but have realized that with any cleaner all fans sucking out air from the camper will suck out air form the toilet into the camper. We also realized that the Thetford toiled provides a helpful sealing action when flushing. So in addition to using this or any product: turn off all of the out take fans and close the lid when flushing. I It seems to work well for 5 to seven days, the maximum I wait before emptying the tank. If temperatures are 95 and above for several days you may want to use Porta-Pak a chemical based produce. Finally, a note on the use of bio-pad and cleaning agents: Bleach based products and many other chemical based products will kill the enzyme that is the basis of this product. I use Green Works and this seems to be friendly enough. I use other products to clean the toilet just before I dump. I suspect that some to the less positive reviews may relate to this issue. If you are not going to use "chemical" bast agents you have to use similar cleaners. Most additives on the market will reduce the odor associated with raw sewage, but none willl make it smell like a bed of flowers. This product does a great job and it will not have to be removed during sewage treatment. (In most cases they are not removed, just diluted.) Nor will it harm septic systems. (A final note: When talking with manufactures about sented products they note that the scents are for the customers when they open the package. The scents are totally lost when the product is sent into the tank.)

### ⭐⭐⭐⭐⭐ Yes! It works! Camping potty savior
*by D***S on November 10, 2024*

I am in a remote off grid cabin and have a little camping potty for overnight needs. I have been using it for over a year and never put chemicals or anything but soapy water in it to clean it. But now despite not ever going number 2 in it, it had gotten really stinky to the point that every time I opened the lid to use it, it would stink up the bathroom. I was skeptical but decided to toss one in (with a little water) after cleaning as usual. I am happy to say my potty doesn’t stink up the bathroom anymore. Smiley face! The pouch dissolved quickly and the ‘alpine’ scent is pleasant although not what I expected as a pine scent. But still even though it’s not the alpine I wanted, it still smells clean and fresh. Highly recommended.

## Frequently Bought Together

- Walex Bio-Pak Black Holding Tank Deodorizer & Waste Digester Drop-Ins - Advanced Enzyme Formula for Rapid Breakdown of Waste & Paper, Removes Odors & Cleans Tank; Tropical Breeze, 10-Pack
- Scott Rapid-Dissolving Toilet Paper, 12 Double Rolls, Sustainable, Septic-Safe, Toilet Paper
- Walex Porta-Pak Black Holding Tank Deodorizer & Portion Control System Drop-Ins - Rapid Breakdown of Waste & Paper, Odor Prevention, Cleans Tank & Sensors - Fresh Scent, 10-Pack

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-02-19*