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20 Best Drain Cleaner For Cast Iron Pipes (2022 Updated)

Cast-iron drain pipes are strong and durable, but over time they can become clogged with grease, soap, hair, and other debris. When this happens, you may need to use a drain cleaner to clear the clog.

Drain cleaners come in both liquid and gel form, and they typically contain harsh chemicals that can eat away at the clog and the pipe itself.

20 Best Drain Cleaner For Cast Iron Pipes

1. Liquid Fire Drain Line Opener 32 oz

Liquid Fire Drain Line Opener 32 oz

  • For sinks, tubs, showers and septic laterals
  • Creates heat that dissolves clog
  • Provides free running drains in freezing weather
  • Read label before purchasing, opening or using
  • Plastic bottle

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Half Hitch

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Specifications

Details
Assembled Product Weight 48 lbs
Form Liquid
Container Type Bottle
Retail Packaging BTL IN BAG PLSTC

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jenn.f
Edwenia

2. Thrift T-100 1 Pound Drain Cleaner

Thrift T-100 1 Pound Drain Cleaner

  • 1 lb, Size: Small

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Details
Acidic NO
Certifications and Listings DOT Rated, USDA Approved
Commercial/Residential Commercial / Residential
Deodorizing NO
Drain Treatment Type Drain Opener

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utah_titans
FeistyRunner

3. Roebic HD-CRY-DO 2-Pound Heavy Duty Crystal Drain Opener

Roebic HD-CRY-DO 2-Pound Heavy Duty Crystal Drain Opener

  • Ideal for kitchen clogs
  • Keeps drains clear
  • Contains 100-percent lye
  • Economical and easy to use

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For Use in Bathrooms Yes
Deodorizing No
Organic No
Safe for Garbage Disposals No
Cleans Pipe Walls Yes

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onyxwar
JamieLiz
dlwilson88

4. Thrift T-600 Alkaline Based 6 lb. Granular Drain Cleaner

Thrift T-600 Alkaline Based 6 lb. Granular Drain Cleaner

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24hr Supply

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Details
Product Dimensions 4 x 8 x 11 inches
Is Discontinued By Manufacturer No
Item Package Quantity 1
Included Components 6 lb bottle of thrift

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14garagesales
Zorg

5. Roebic K-97 Main Line Cleaner – 32 fl oz

Roebic K-97 Main Line Cleaner - 32 fl oz

  • Size: 950ml
  • Quart mainline cleaner
  • Recommended for city sewer lines and septic systems, naturally breaks down waste
  • Digests sewage solids, fats, grease, and paper
  • Ideal for low-flow toilets

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Specifications

Details
Packaging Depth 2.25 IN
Packaging Height 7.75 IN
Packaging Width 4.5 IN
Package Weight 2.5
Package Weight UOM LB

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PAMELA
Sam Floss
Negative

6. Instant Power Drain Hair Clog Remover 33.8 oz.

Instant Power Drain Hair Clog Remover 33.8 oz.

  • Non-acid formula is safe to use all pipes
  • Hair drain clog remover dissolves blockages in tubs, shower basins and sinks
  • Easy to use; instructions are written on the bottle
  • Instant Power Hair Clog Remover is suited for residential and commercial applications
  • Bottle contains 33.8 fl oz

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Capacity 33.8 Oz

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olivia
ABME

7. Drain King – 1 In. to 2 In.

Drain King - 1 In. to 2 In.

  • Insert in drain line opening
  • Turn water on
  • Automatically seals drain and powerful water pulses loosen and clear drain
  • Product Specs

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Specifications

Details
Package Weight 4 lbs.
Package Quantity 12
MFG Brand Name Drain King
Operating Pressure 60
Bladder Length (In) 1.25
Bladder Width (In) 4.5
MFG Model # (Series) 501
Overall Length (in) 1.25
Compatible Drain Sizes 1″ – 2″
MFG Part # (OEM) 501
Material Rubber
Color / Finish Black
Item has Restrictions? No
Manufacturer Warranty 1 year
Product Name 1 In. to 2 In.

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Boatdoc
KDS

8. Drano Dual Force Foamer Clog Remover – 17 fl oz bottle

Drano Dual Force Foamer Clog Remover - 17 fl oz bottle

  • Handles hair and gunk and is safe for all septic systems
  • Effective on kitchen and bathroom clogs
  • Keeps drains clear longer than ordinary liquids
  • Fills the whole pipe, attacking clogs that ordinary liquids can’t

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Units in Package 1
Unit Size 17 fl oz
Directions Directions for Use on Slow-Running Drains: (1) Slowly pour entire contents of bottle down drain. (2) Allow product to work for one hour. (3) Flush with hot tap water. (4) Repeat steps if necessary. Do not use on standing water clogs. For standing water clogs, use Drano Max Gel Clog remover. Important: Open carefully. Do not squeeze bottle. Avoid splashing. Clean up spills at once. Keep hands, face, children and pets away from drains when using Drano Dual Force Foam. Product may foam up from drain. This is normal. If foam is visible after use, rinse foam completely down drain with water. Do not use product with a plunger because Drano Dual Force Foam may still be present. Do not use in a toilet. Do not reuse empty container. Rinse container and replace cap before discarding. Garbage Disposal Drains: Follow same directions. If drain has not cleared, do not turn on disposal since product may splash back. Consult plumber. (1) Pour 1 bottle slowly into drain. (2) Wait for 1 hour. (3) Flush drain with hot water. Repeat steps if necessary.
Ingredients Sodium Hypochlorite, Sodium Hydroxide, Sodium Silicate, Surfactants and Hydrogen Peroxide, Water, Bleach, Cleaning Agent, Caustic, Foaming Agent, Corrosion Inhibitor, SCJ Formula 35 4604, Palmitamine Oxide, Myristamine Oxide, Etidronic Acid.
Warnings Danger: Keep out of reach of children. Can cause burns on contact. Harmful if swallowed. Read back label carefully. Danger: Keep out of reach of children and pets. Can cause burns on contact. First Aid – Give immediately, then call a poison center, physician or emergency room: eyes & skin: Rinse with water, remove contacts, then rinse with plenty of water for at least 20 minutes. If Swallowed: Rinse mouth. Immediately drink a glass of water or milk. Do not induce vomiting. Danger: Keep out of reach of children and pets. Can cause burns on contact. Avoid contact with liquid, foam or residue around the drain. Wash thoroughly after handling. If product contacts clothing, immediately remove and wash clothing. Harmful if swallowed. Do not taste or swallow. Chemical Hazard: Contains sodium hypochlorite (bleach), a strong oxidizer. Never use or mix with other household products such as acids, bowl cleaners, rust removers or products which contain ammonia. Hazardous gases may result. If this occurs, leave the room immediately and ventilate area if possible.

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drano.com
Tigertopaz

9. Rooto Drain Cleaner – 64 oz jug

Rooto Drain Cleaner - 64 oz jug

  • Brand Name: Rooto.
  • Sub Brand: Professional.
  • Product Form: Liquid.
  • Product Type: Drain Opener.
  • Container Size: 64 oz.

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Manufacturer Part ID 1079

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Dr. B
BrooklynBay
nature

10. Liquid-Plumr 80 oz. Pro Strength Full Clog Destroyer and Drain Cleaner Plus PipeGuard (2-Pack)

Liquid-Plumr 80 oz. Pro Strength Full Clog Destroyer and Drain Cleaner Plus PipeGuard (2-Pack)

  • 160 Fl Oz

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Details
Units in Package 1
Unit Size 80 fl oz
Directions To Remove Clogs: 1. Snake. Do not use snake when gel is in the drain. Insert snake into drain. Move up and down. Pull snake out slowly and discard. Caution: Sharp edges. Dispose of snake after use. Do not use snake in toilet or garbage disposal. 2. Pour 16 oz (1/5 bottle). 3 Wait 15 minutes. 4. Flush with hot water. For persistent, repeat steps 2-4. Do not use with plunger or in toilets. Product Guide: Fully Clogged Drains: Clog Destroyer + Pipe Guard; Urgent Clear. Slaw Drains: Clog Destroyer + Pipe Guard; Urgent Clear; Hair Clog Eliminator. Clog Prevention: Clog Destroyer + Pipe Guard. Hair Clogs: Clog Destroyer + Pipe Guard; Urgent Clear; Hair Clog Eliminator. 70% More Actives: Hair Clog Eliminator.
Ingredients Contains: Sodium Hypochlorite, Sodium Hydroxide and Biodegradable Surfactants.
Warnings Danger: Can cause burns on contact. Harmful if swallowed. Keep out of reach of children and pets. Read back panel carefully. Danger: Keep out of reach of children and pets. Injures eyes, skin and mucous membranes on contact. Harmful if swallowed. Avoid splashing. Do not use with ammonia, toilet bowl cleaners or non-Liquid-Plumr clog removers, as splashing or the release of hazardous gases may occur. Clean up any spillage immediately. First aid: eyes – flush immediately with water for 15 minutes. If wearing contact lenses, remove after first 5 minutes. Skin – wash immediately with water. If swallowed – drink a glassful of water. Do not induce vomiting. In all cases, call a doctor or poison control center immediately.

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ginger
BooBoo76
ShoppingFool

11. Zep Enzymatic Drain Cleaner – 18 fl oz jar

Zep Enzymatic Drain Cleaner - 18 fl oz jar

  • Helps prevent clogs in sinks, toilets and showers
  • Enzyme-based formula breaks clogs by cleaning and removing build-up
  • Monthly use helps maintain home pipes and prevent clogs before they happen
  • Certified, biodegradable formula, breaks down into carbon dioxide, minerals and water

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Specifications

Details
Scent Scent Free
Capacity 18 oz
Type of Cleaner Drain Cleaner
Form Powder
For Kitchen

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Rannie
Hogie
JIMBO

12. Bio Drain 32 oz Drain Cleaner

Bio Drain 32 oz Drain Cleaner

  • 32 oz

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Solutions Pest & Lawn

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wyldman671

13. Liquid-Plumr 128 oz. Industrial Strength Gel Drain Cleaner and Drain Unclogger (2-Pack)

Liquid-Plumr 128 oz. Industrial Strength Gel Drain Cleaner and Drain Unclogger (2-Pack)

  • 128 oz

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Product Details

Specifications

Details
Chemical Form Liquid
Commercial / Residential Commercial / Residential
Compatible Pipe Material Multi-Purpose
Container Size (oz.) 128
Drain Cleaners Type Bathtub,Sink,Toilet

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Ctrudell
MomofBoys2

14. Thrift Marketing GIDDS-TY-0400879 Drain Cleaner 2 lb

Thrift Marketing GIDDS-TY-0400879 Drain Cleaner 2 lb

  • This product is highly durable.
  • This product adds a great value.
  • This product is manufactured in United states.
  • THRIFT works on drains, sewer lines, grease traps, and septic systems.
  • THRIFT will clean out a drain line in less than 60 seconds!

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beautymeek.com

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15. CLR Compressed GAS Drain Opener 4.5 oz

CLR Compressed GAS Drain Opener 4.5 oz

  • Environmentally safe
  • Uses no harsh chemical that can harm pipes
  • Up to 15 applications
  • Offer a quick, safe and easy way to get rid of clogs

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Units in Package 1
Unit Size 4.5 oz
Directions Read entire label before use. If blockage is not cleared after third application, call a qualified plumber. Canister nozzle must be pointed down (into drain) when using. Directions for using CLR Power Plumber without universal kit. Blocked sinks and tubs: 1. Fill sink with enough water to submerge can’s cap. 2. Block overflow with damp rag or sponge and hold firmly. 3. Place can’s cap over drain opening and press firmly for one second. Repeat if necessary. Slow-Moving Drains: 1. Place stopper in drain. 2. Fill sink or tub with 6-7 Inch of water, remove stopper. 3. Block overflow with damp rag or sponge and hold firmly. (Fig. 1 and 2). 4. Place can’s cap over drain opening and press firmly for one second. Repeat if necessary. Double Sinks: 1. Place stopper in sink and hold. 2. Follow the same directions as a blocked sink. For toilets, floor drains and garbage disposals, a Power plumber universal kit is needed.
Warnings Flammable aerosol. Pressurized container: May burst if heated. Read carefully other warnings on direction back panel. Warning: Flammable aerosol. Pressurized container may burst if heated. Keep away from any source of ignition, heat, sparks and open flames including pilot lights. Do not smoke. Prevent the buildup of vapors – open windows – use only with cross ventilation. Do not use in clogged drains where any other chemicals may have been used and may be present. Splash back of chemicals can burn skin and eyes. If a chemical comes into contact with skin or eyes, flush area with water immediately and consult Physician. Keep out of reach of children. Vapor harmful. Avoid inhalation. Use in a well ventilated area. If inhaled: Increase fresh air circulation or leave area. Avoid stimulants. Do not give ephedrine or similar drugs. Call a physician immediately. Eye or skin contact with liquid may cause cold burns and frostbite. If eye or skin contact occurs, flush with plenty of water for at least 15 minutes. If eye is irritated or skin frostbitten, get medical care immediately. While waiting for medical care, warm affected skin area with warm (not hot) water until all sensation returns. Treat frozen parts gently – do not rub them. If medical advice is needed have product container or package at hand. Contents under pressure. Do not pierce or burn even after use. Do not expose in temperatures exceeding 50 Degrees C/122 Degrees F. Protect from sunlight Store in well ventilated place. Do not store in car or vehicle. Intentional misuse by deliberately concentrating and inhaling contents may be harmful or fatal. Such misuse could cause death to occur without warning. Contains 1, 1 Difluoroethane (CAS no. 75-37-8).

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Mrtz

16. Thrift Marketing T-200 Drain Cleaner 2 lbs

Thrift Marketing T-200 Drain Cleaner 2 lbs

  • 2 lb

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Size 2 lb.

17. Liquid Plumr Foaming Pipe Snake Clog Remover – 17 fl oz bottle

Liquid Plumr Foaming Pipe Snake Clog Remover - 17 fl oz bottle

  • 17 fl.oz. Bottle of drain cleaner for partially blocked drains
  • 2-in-1 foam clears slow-flowing drains
  • Dissolves hair, gunk, grease and soap scum
  • Cleans dirty pipe walls to get drain flowing

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Product Details

Specifications

Details
Assembled Product Weight 1.45 lbs
Recommended Location Indoor
Form Liquid
Container Type Bottle
Assembled Product Dimensions (L x W x H) 3.72 x 1.84 x 8.91 Inches

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Nyogi116
jcaitlin221
kingoftheink

18. Drano Max Gel Clog Remover

Drano Max Gel Clog Remover

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Shoplet

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Toilet Terminator
aa0162022

19. Professor Amos 32 fl. oz. Superfast Drain Cleaner 2-Pack, Size: One Size

Professor Amos 32 fl. oz. Superfast Drain Cleaner 2-Pack, Size: One Size

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HSN

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iblarrysgal36
Pete - ATL
11111112222222555555

20. Thrift Drain Granular Cleaner – 2 lb, 3-Pack

Thrift Drain Granular Cleaner - 2 lb, 3-Pack

  • Dry, odorless crystals
  • Four-solutions-in-one product that works on sewer lines, grease traps, and septic systems
  • Will clean out the drain line in less than 60 seconds
  • Non-acid formula will not harm fine fixtures, porcelain, chrome trim, polished brass, plastic, or metal pipes
  • Ideal for use in hospitals, schools, hotels, or any place noxious fumes may cause a problem

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Recommended Location Indoor

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mark

Conclusion

As the best drain cleaner for cast iron pipes will vary depending on the specific circumstances. However, some general tips that may be helpful include using a drain auger or cable to clear the blockage, using a drain snake to break up the blockage, or using a chemical drain cleaner designed specifically for cast iron pipes.

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