

Green Gobbler Main Line Drain Opener and Clog Remover Liquid, Bleach-Free - 1 Gallon
Key item features
- Powerful Mainline: This high-density liquid effectively breaks down stubborn clogs and buildup, liquefying hair, sludge, and organic material in main drain lines.
- Versatile Pipe: Safe for use in sinks, tubs, toilets, and garbage disposals, it is not harmful to copper or PVC pipes.
- Extended Reach: The formula can effectively clear clogs located up to 50 feet away from the drain.
- Easy Application: For main line clogs, simply pour into a first-floor toilet, flush, and refrain from use for 10-12 hours.
- Gentle Formula: Features a bleach-free, non-corrosive formula that is safe for septic systems and free of sodium hydroxide and harsh odors.
- Anti-Splash: The bottle incorporates anti-glug technology to help reduce splashing during application.
Specs
- FeaturesClog-Free, Septic Safe
- Product net content parent128 Fluid Ounces
- ScentOdorless
- Cleanser formLiquids
- Assembled product weight9.06 lb
- OccasionDrain Clog
Reviews summary
- : Does not damage pipes during use.
- : Resolves clogs overnight.
- : Available at lower prices than competitors.
- : Has little to no odor.
- : Clears blockages in sink drains with varying degrees.
- : Can be effective, but may require repeated use.
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About this item
Product details
- MAIN LINE OPENER: Break down buildup in pipes and get rid of stubborn clogs. This high-density bleach free formula sinks to problem areas and liquefies hair, sludge, flushable wipes and other organic material in your main drain line.
- SAFE FOR ALL PIPES: Use it in sinks, tubs, and toilets. It's not harmful to copper or PVC pipes and can even be used in garbage disposals! This bottle also uses anti-glug technology to help reduce splashing.
- POWERFUL REACH: The Main Line Opener will reach clogs up to 50 feet away from the drain. For main line clogs, simply pour it into the first floor toilet, flush, and refrain from use for 10-12 hours.
- BLEACH FREE FORMULA: Green Gobbler uses a powerful bleach free formula and is non-corrosive to plumbing.
- GREEN GOBBLER GUARANTEE: Green Gobbler cares about its customers. We take pride in developing innovative & effective products for your home or business. If for any reason you are unsatisfied, please contact us. We offer a money-back guarantee within 30 days of purchase.
Specifications
Features
Product net content parent
Scent
Cleanser form
Warranty
Warranty information
Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.
Ingredients
Ingredients
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Warnings
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Customer ratings & reviews
Reviews summary
- : Does not damage pipes during use.
- : Resolves clogs overnight.
- : Available at lower prices than competitors.
- : Has little to no odor.
- : Clears blockages in sink drains with varying degrees.
- : Can be effective, but may require repeated use.
Customer images






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Showing 1-3 of 332 reviews
Verified Purchase
It really, REALLY works!! (Really!)
Green Gobbler Main Line Opener And Clog Remover Seriously. It's nothing short of miraculous. I've had an ongoing problem with my master bath sink. Every 4 to 6 months it starts draining more and more slowly until it's basically unusable and we take it apart and have to clear it about a foot into the wall. We've tried several “industrial” versions of name brand drain cleaners, and a variety of cheap, zip tie looking snakes with no results whatsoever. After reading a CNET article (Best Chemical Drain Cleaners You Can Buy in 2025) I decided to try the Green Gobbler Main Line Opener And Clog Remover. Per the instructions, I poured a quarter of the bottle down the drain, waited an hour and then poured hot water in. It helped a little. The instructions said if that didn't work, to try again and let it sit overnight. Total success! Even with the water running full blast, it's draining beautifully. If you have a really stubborn clog - try it! It's worth every freaking cent! Highly, highly recommend.
Verified Purchase
had a slow kitchen sink drain and with 16oz of treatment for 1/2hr ot opened the drain up. I followed up with another 16oz let it sit overnight just for added precaution and my sink is totally clear now. Able to fill the sink and pull the plug with a couple of gallons of water and it drains fast.
Verified Purchase
I like this product. I was leery because it isn't usually the main line cleaner that we use. but it works fine. make sure you brush your teeth or do whatever you need to do in that sink before you for the stuff in. if it's draining at all wait till it drains then pour it in if not you might have to take the jail off the pipe and power it out a little bit. as I said pull this up in leave it alone for at least 6 to 8 hours. it's not an immediate fix any used for 6 to 8 hours not 15 minutes. it should work fine. mine is an old thing it's always been slow even trimming your beard would stop this thing up in the first place just hit the beard trimmings out with a Kleenex or something.
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