(4 pack) Liquid Lightning Virgin Sulfuric Acid Drain Opener, 64oz
(4 pack) Liquid Lightning Virgin Sulfuric Acid Drain Opener, 64oz
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(4 pack) Liquid Lightning Virgin Sulfuric Acid Drain Opener, 64oz

Key item features

Liquid Lightning Virgin Sulfuric Acid Drain Opener, 64oz:
  • Fast acting- works in about 15 minutes
  • Dissolves grease, hair, soap, paper, cloth, and most organic material
  • Safe for use on all plumbing systems, when used as directed
  • Pour contents into drain and watch it remove clogs and blockages
Current price is $69.7627.3 ¢/fl oz
Price when purchased online
  • Free shipping
  • Free 90-day returns

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This item includes:

  • 4-pack of Liquid Lightning Virgin Sulfuric Acid Drain Opener, 64oz
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Customer ratings & reviews

4.3 out of 5 stars
stars404 ratings134 reviews
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Reviews summary

Neutral

  • : Can be effective at clearing clogs, but may stain or fail to clean.
  • : Can be straightforward for effective cleaning, but may require caution to avoid damage.
  • : Can effectively dissolve tough clogs, but may not work for all types.
  • : Effective for some clogs, but inconsistent or damaging for others.

Cons

  • : Can cause potent, lingering odor after use.
  • : Can scratch or etch certain surfaces and struggle with low-flow clogs.
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Showing 1-3 of 134 reviews

Mar 7, 2026
Michael
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Great for drains %26 Digging tree holes too!

Very effective product! This is highly concentrated sulfuric acid -- HANDLE WITH EXTREME CARE! Take the bottle precautions seriously: the fumes can burn your airways and lungs, and if you get the liquid on you it will eat right thru your skin in a hurry (this is all first-hand knowledge). When you go to Walmart to buy this, take a plastic tub with you and put the bottles into the tub instead of right in your vehicle. Of the 6 bottles I have purchased, 4 were leaking. Leaking acid will eat right thru your vehicle's interior or carpet. It will also eat right thru tables or flooring or anything else you might set it on, including concrete which it will permanently etch. Yes, all first-hand knowledge again. Always pour this drain opener (acid) into standing water, do not pour it into a drain and then add water on top -- if you do it will boil and spatter and potentially geyser up out of the drain like a volcano and spatter over nearby things including you if you're standing there (again, first-hand knowledge). This drain opener is 93% sulfuric acid; that is, it's almost pure acid and as strong as sulfuric acid can be made. It has red dye added so that it can bee seen more easily when poured into standing water (undyed sulfuric acid is naturally clear like water). This product will dissolve just about anything in your sink drain to unclog it. It is also effective at dissolving certain kinds of alkaline rock, such as caliche and limestone, which can come in handy when digging holes for trees.

Helpful?34CH5KNHC11M15374806654
May 1, 2026
Eric
Top Reviewer
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Worked for me

Had a stubborn clog. Might have been a very small rag. But not sure. Tried everything except calling a plumber. Used this stuff as directed. Waited 15 minutes and prayed. Bam. Worked. Will definitely buy this again. Sulfuric acid is the way to go.

Helpful?34CH5KNHC11M15374806654
May 10, 2026
Tim
Top Reviewer
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

POWERFUL drain cleaner

This stuff is no joke... absolutely take the directions seriously when they warn you to wear a face shield and rubber gloves during use. It's literally SULFURIC ACID, and will cause injuries if you don't treat it with the proper respect! That in mind? If you have a clog that nothing else seems to be able to clear, this stuff will literally disintegrate it in short order!

Helpful?34CH5KNHC11M15374806654