--- product_id: 575868262 title: "HD-CRY-DO-6 Crystal Heavy Duty Drain Opener, 0.9kg, White, Granular" brand: "roebic" price: "R1003" currency: ZAR in_stock: true reviews_count: 5 category: "Roebic" url: https://www.desertcart.co.za/products/575868262-hd-cry-do-6-crystal-heavy-duty-drain-opener-0 store_origin: ZA region: South Africa --- # Economical 2 lb size 100% lye power Heavy-duty clog melting HD-CRY-DO-6 Crystal Heavy Duty Drain Opener, 0.9kg, White, Granular **Brand:** roebic **Price:** R1003 **Availability:** ✅ In Stock ## Summary > 🚿 Clear drains, zero downtime – because your flow deserves the best! ## Quick Answers - **What is this?** HD-CRY-DO-6 Crystal Heavy Duty Drain Opener, 0.9kg, White, Granular by roebic - **How much does it cost?** R1003 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/575868262-hd-cry-do-6-crystal-heavy-duty-drain-opener-0) ## 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 - • **Budget-Smart Bulk:** Generous 2-pound granular pack delivers long-lasting drain clearing without breaking the bank. - • **Trusted by Thousands:** 4.3-star rating from 925 users who swear by its reliable clog-busting performance. - • **Heavy-Duty Drain Defense:** Designed to tackle the most stubborn kitchen blockages, keeping your pipes flowing freely. - • **Simple & Safe Application:** Clear, step-by-step instructions ensure effective use without guesswork or mess. - • **Unleash the Power of Pure Lye:** 100% sodium hydroxide formula obliterates grease and tough clogs with professional strength. ## Overview Roebic HD-CRY-DO-6 is a 2-pound, professional-strength granular drain opener containing 100% sodium hydroxide. Specially formulated to melt grease and clear tough kitchen clogs, it offers an economical and easy-to-use solution trusted by hundreds of users to keep drains flowing smoothly. ## 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 - works great second time buying this product Review: Quality - I had a severely clogged bathroom shower drain. I had to use a lot of this product but it finally unclogged the drain and saved me a plumber's bill ## 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 925 Reviews | | Global Trade Identification Number | 00033051120878 | | Item Weight | 2 Pounds | | Item weight | 2 Pounds | | Model Number | HD-CRY-DO | | Number of Items | 1 | | Part Number | HD-CRY-DO | | 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 | | Unit count | 1 Count | ## Product Details - **Brand:** Roebic - **Item weight:** 2 Pounds - **Product benefits:** Melts grease, clears clogs, and keeps drains clear - **Scent:** Unscented - **State of matter:** Solid ## Images ![HD-CRY-DO-6 Crystal Heavy Duty Drain Opener, 0.9kg, White, Granular - Image 1](https://m.media-amazon.com/images/I/71CNm2YzEbL.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* works great second time buying this product ### ⭐⭐⭐⭐⭐ Quality *by L***N on 14 May 2026* I had a severely clogged bathroom shower drain. I had to use a lot of this product but it finally unclogged the drain and saved me a plumber's bill ### ⭐⭐⭐⭐⭐ Use as directed because it emits drain cleaner smelll *by T***N on 26 November 2025* Bathroom drain a problem, this WORKS well ## 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.za/products/575868262-hd-cry-do-6-crystal-heavy-duty-drain-opener-0](https://www.desertcart.co.za/products/575868262-hd-cry-do-6-crystal-heavy-duty-drain-opener-0) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-08-09*