---
product_id: 575868262
title: "Roebic HD-CRY-DO-6 Crystal Heavy Duty Drain Opener, 0.9kg, White, Granular"
brand: "roebic"
price: "R1134"
currency: ZAR
in_stock: false
reviews_count: 5
category: "Roebic"
url: https://www.desertcart.co.za/products/575868262-roebic-hd-cry-do-6-crystal-heavy-duty-drain-opener
store_origin: ZA
region: South Africa
---

# Melts grease & clogs 100% lye power Heavy-duty crystal formula Roebic HD-CRY-DO-6 Crystal Heavy Duty Drain Opener, 0.9kg, White, Granular

**Brand:** roebic
**Price:** R1134
**Availability:** ❌ Out of Stock

## Summary

> 🚿 Clear drains, clear mind — never miss a flow!

## Quick Answers

- **What is this?** Roebic HD-CRY-DO-6 Crystal Heavy Duty Drain Opener, 0.9kg, White, Granular by roebic
- **How much does it cost?** R1134 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/575868262-roebic-hd-cry-do-6-crystal-heavy-duty-drain-opener)

## Best For

- roebic enthusiasts

## Why This Product

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

## Key Features

- • **Economical & Efficient:** Clears drains quickly without repeated use
- • **Simple & Safe Application:** Easy-to-follow steps for maximum effectiveness
- • **Keeps Your Kitchen Flowing:** Prevents future clogs for uninterrupted drain performance
- • **Professional Strength Formula:** Heavy-duty crystals designed for tough drain blockages
- • **Unmatched Grease Melting Power:** 100% sodium hydroxide crushes kitchen clogs fast

## Overview

Roebic HD-CRY-DO-6 is a 0.9kg professional-grade crystal drain opener containing 100% sodium hydroxide. Specially formulated to melt grease and dissolve tough kitchen clogs, it offers an economical and powerful solution to keep your drains clear and flowing smoothly. Ideal for heavy-duty use, this granular formula is easy to apply and trusted by thousands for reliable clog removal.

## Description

Highlights : Size: 2 lbs Economical and easy to use Melts and destroys grease Contains 100% sodium hydroxide (caustic soda; lye) and clears tough clogs from pipes and drains Destroys grease and other kitchen clogs and will keep drains clear.

Review: keeps things flowing
Review: Cut through clogs perfectly

## Features

- IDEAL FOR KITCHEN CLOGS. Melts and destroys grease, other kitchen clogs and will keep drains clear
- ECONOMICAL AND EFFECTIVE. Heavy duty Professional Strength Crystal Drain Opener can effectively clear tough clogs from pipes and drains
- 100-PERCENT LYE. Contains 100% sodium hydroxide (caustic soda). Not for use in toilets, garbage disposals or with aluminium, lead, zinc or galvanized pipes
- EASY TO USE. Follow simple steps provided on label to ensure effectiveness of Roebic Heavy Duty Crystal Drain Opener

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00BH34MEY |
| Brand | Roebic |
| Brand Name | Roebic |
| Customer Reviews | 4.3 out of 5 stars 917 Reviews |
| Global Trade Identification Number | 00033051120878 |
| Item Weight | 2 Pounds |
| Item weight | 2 Pounds |
| Number of Items | 1 |
| Product Benefits | Melts grease, clears clogs, and keeps drains clear |
| Product benefits | Melts grease, clears clogs, and keeps drains clear |
| Scent | Unscented |
| State of Matter | Solid |
| State of matter | Solid |
| UPC | 033051120878 |
| Unit Count | 1 Count |

## Product Details

- **Scent:** Unscented
- **Item weight:** 907 g
- **State of matter:** Solid
- **Product benefits:** Melts grease, clears clogs, and keeps drains clear
- **Number of Items:** 1

## Images

![Roebic HD-CRY-DO-6 Crystal Heavy Duty Drain Opener, 0.9kg, White, Granular - Image 1](https://m.media-amazon.com/images/I/71CNm2YzEbL.jpg)
![Roebic HD-CRY-DO-6 Crystal Heavy Duty Drain Opener, 0.9kg, White, Granular - Image 2](https://m.media-amazon.com/images/I/81I-VlGSD4L.jpg)
![Roebic HD-CRY-DO-6 Crystal Heavy Duty Drain Opener, 0.9kg, White, Granular - Image 3](https://m.media-amazon.com/images/I/81LFDir67-L.jpg)
![Roebic HD-CRY-DO-6 Crystal Heavy Duty Drain Opener, 0.9kg, White, Granular - Image 4](https://m.media-amazon.com/images/I/81YgZ0lf1yL.jpg)
![Roebic HD-CRY-DO-6 Crystal Heavy Duty Drain Opener, 0.9kg, White, Granular - Image 5](https://m.media-amazon.com/images/I/81ryP-FDSWL.jpg)

## Questions & Answers

**Q: The bottle says 100% lye, and reviewers have said the msds sheet confirms, but when i look at the msds it states 96-100%. did it change? or what gives**
A: 96% is about right for industrial-grade chemicals.  To get 100% you need reagent grade and will pay for it.  So this is lye suitable for non-technical purposes.

**Q: Is this cleaner harmful to plastic drain pipes?**
A: In the short term probably not because there is no warning on the container about such a risk.  Plus, when I make soap, I dissolve the lye in a plastic bucket, one that I have dedicated to lye solution for soapmaking.  I have used the same bucket for a number of years, with no holes forming in it.  It is possible that over a period of decades it might be affected.  However, when I make lye solution for soapmaking, the solution sits in the same bucket for at least 30 minutes, sometimes longer, whereas drain cleaners are meant to go in and do their job, then get flushed away.  So I believe it is highly likely that this drain cleaner will not harm plastic drain pipes.

**Q: Will this product kill the good bacteria in the septic system?**
A: It is likely that Roebic lye crystals will kill the good bacteria in a septic system.  It would depend on how much lye you pour down the drain or toilet, and the size of your system, and possibly other factors.  I am fairly certain I have read more than once that lye is not to be used in septic systems which rely on living organisms to break down sewage.
If it is too late and you have used it and killed the living organisms, there is a product you can buy that is supposed to help recolonize or repopulate the system with good microorganisms.  Rid-X is one such product.  Good luck.

**Q: How many cups are in this 60 ounce container?**
A: According to my scale: 
1 cup of Roebic lye crystals weighs 9.6 ounces (oz)
2 cup Roebic lye crystals weighs 19.2 ounces (oz)
so 60 ounces (oz) should give you 6.25 cups.

## Customer Reviews

### ⭐⭐⭐⭐⭐ keeps things flowing
*by J***S on 2 July 2022*



### ⭐⭐⭐⭐⭐ Cut through clogs perfectly
*by S***S on 23 December 2025*



### ⭐⭐⭐⭐⭐ Use as directed because it emits drain cleaner smelll
*by T***N on 26 November 2025*



## Frequently Bought Together

- Roebic HD-CRY-DO 2 Pounds Professional Strength Crystal Drain Opener, 100% Lye, Black
- Roebic K-97 Main Line Cleaner: Exclusive Bacteria Digests Paper, Fats, and Grease in Sewer and Septic Systems - 32 Ounces, Liquid
- Roebic FRK-1LB Foaming Root Killer: Clear Pipes, Stop New Growth, Safe for All Plumbing - 1lb, White, Granules

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-02-26*