My sink drains , after removing the top cover of the drain there is still a built in metal that has holes not removable. Will it hurt that?

I don't think so. It didn't hurt the metal ring that is around the sink drain when I used it so I think you're safe. It's a great product.

Are both of these just as effective at strong clogs?

Before you consider dumping sodium hydroxide down your sink, get a big bucket, unscrew the trap under your sink, and clean it out manually. And never, ever dump grease down your sink because it will set up and clog it up all over again..

can I use it for garbeage disposals?

i never had a garbage disposal to try it on? i used it in the bathroom to dissolve hair clogging the drain and it worked.

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Pure Lye | 1 lb, 99% Pure Sodium Hydroxide | Eco-Friendly, Industrial Strength, Drain Opener | Safe on Fixtures | Static-Free, Unique Beads for Soap Making (Pack of 2 - Beads & Flakes)

Pure Lye | 1 lb, 99% Pure Sodium Hydroxide | Eco-Friendly, Industrial Strength, Drain Opener | Safe on Fixtures | Static-Free, Unique Beads for Soap Making (Pack of 2 - Beads & Flakes)

Product ID: 16017426

Details

Brand
ComStar
Manufacturer
ComStar
Number of Items
2
UPC
024924305072
Unit Count
16.0 Ounce

🌿Eco-friendly & biodegradable

🧼Beads & flakes dissolve quickly

⚗️99% pure Sodium Hydroxide

S$117

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Description

🧪 Pure Power Meets Eco-Savvy Clean – Don’t Get Left Behind!

ODORLESS FUME FREE - No harsh smells or fumes, making it ideal for homes, schools, and professional kitchens.
DUAL FORM VERSATILITY - Includes both beads and flakes for faster, clump-free dissolving—perfect for soap making and drain clearing.
ECO CONSCIOUS FORMULA - Biodegradable, non-acidic, and safe on fixtures and septic systems—clean with confidence.
PRECISION DRAIN CLEARING - Unique bead and flake shapes sink to blockages for rapid, effective grease and root removal.
INDUSTRIAL STRENGTH PURITY - Experience 99% pure sodium hydroxide for unmatched cleaning power.

ComStar Pure Lye offers 99% pure sodium hydroxide in both bead and flake forms, delivering industrial-strength drain clearing and soap-making efficiency. Its eco-friendly, odorless, and non-acidic formula safely dissolves grease, hair, and roots without damaging fixtures or septic systems, making it the go-to choice for professionals and crafters alike.

Specifications

ASIN	B0GYQGR9FB
ASIN	B0GYQGR9FB
Best Sellers Rank	#440,427 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #184 in Commercial Drain Openers #990 in Chemical Drain Openers
Brand Name	ComStar
Customer Reviews	4.5 4.5 out of 5 stars (252)
Date First Available	April 27, 2026
Item model number	30-507
Manufacturer	ComStar
Manufacturer	ComStar
Model Number	30-507
Number of Items	2
Part Number	30-507
UPC	024924305072
Unit Count	16.0 Ounce

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S$117

Duties & taxes included

In stock

Sold byAmazon SINGAPOREDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

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