Comstar Pure Lye® for Drains


In stock

SKU: 30-500 Category:

ComStar Pure Lye®

ComStar Pure Lye is an industrial-strength, powerful tool to clear out drains, grease traps, septic systems and roots. This formula is the purest white, bead-size lye in the world — 99% pure!

A natural drain opener, Pure Lye is biodegradable and odorless within a non-acid formula that is safe on fine fixtures, chrome trim, and metal or plastic pipes. This amazing product clears out clogged and slow-moving drains, grease traps and septic systems, without harming septic tanks or cesspools. Because of the unique bead shape, Comstar Pure Lye will sink to the bottom of standing water and attack the cause of the blockage for a fast break-up.

Comstar Pure Lye® does not stink or create fumes and has become a favorite drain-opening product for homes, schools, hospitals, cafeterias and restaurants.

1lb. Bottles

Comstar Pure Lye® is sold online in 1lb. containers only. If you want 12lbs., order 12 units in the QTY field. You will receive 12 / 1lb. containers. If you are an industrial buyer with “big” needs, contact us.


When purchasing Sodium Hydroxide (CAS# 1310-73-2) – caustic soda, NaOH, Lye)  from online, you are automatically accepting our Terms and Conditions along with our HAZMAT Waiver.

Want More?

We also manufacture Comstar Pure Lye® bead in 20 lb. buckets, 50 lb. pail, and a 55 gallon drum. If you wish to purchase more than 20 lbs. of Comstar Pure Lye®, please contact us.

  1. Use rubber gloves and eye goggles.
  2. Avoid breathing vapors or fumes and do not allow ComStar Pure Lye to come into contact with skin, eyes, mucous membranes, clothing, aluminum, floors, or paint.
  3. DO NOT use if any other chemical has been used.
  4. Before using ComStar Pure Lye, be sure to empty sink of all standing water.
  5. Immediately place dish pan or deep metal container over drain opening to protect against possible eruption. Stand back!
  6. After use, be sure to close cap.
First Aid
  • EXTERNAL: Flood with water then wash with vinegar. Call a poison Control Center or physician for more advice.
  • INTERNAL: Drink large quantities of water or citrus juice. Call Poison Control Center, physician, or emergency room immediately.
  • EYES: Flush with water for 15 minutes. Get prompt medical attention.
DANGER: AVOID CONTACT WITH EYES, SKIN MUCOUS MEMBRANES AND CLOTHING. Can cause eye and skin damage. Can be fatal if swallowed.
MATERIAL SAFETY DATA SHEET Click here to download
Have a Question? This page has answers
Need Pure Lye in Bulk? See details for large orders