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Instant Power

Model # 1801

Internet # 100126446

Store SKU # 160577

128 oz. Main Line Cleaner

This item has been discontinued.
The Home Depot no longer carries this specific product.

$10.98 /each
  • Odorless and fumeless
  • Powerful formula dissolves hair, grease and more
  • Use entire gallon in one application




Model # 1801

Internet # 100126446

Store SKU # 160577

Instant Power Main Line Cleaner clears clogged main sewer lines and lateral/vertical lines. Powerful, non-acid formula dissolves hair, grease, paper and other gunk in drains. Safe for all pipes (including PVC) and septic systems.

  • Clears clogged drains
  • Opens main sewer and lateral lines
  • Safe for all pipes and septic systems
  • 8 hour set time

Info & Guides

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Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 
Chemical Form 
Commercial / Residential 
Commercial / Residential 
Compatible Pipe Material 
Maintenance, Repair & Supplies Product Type 
Drain Openers & Chemicals 
Number of treatments per container 
Prevention formula 
Protects pipes from corrosion 
Quantity (oz.) 
Safe for garbage disposals 
Set Time (Min.) 
Warranty / Certifications
Manufacturer Warranty 
100% Money-back satisfaction guarantee 


Rated 4.3 out of 5 by 136 reviewers.
Rated 5.0 out of 5.0 by a chemical cleaner that really works!!!! About every year or two we would have a backup in our main line and had tried various chemical treatments, but none of them had worked. My brother is a plumber and would have to snake the almost 100 ft. main line which usually took 2 hours each time to free the blockage. He suspected there was a belly in the line somewhere that would accumulate grease, debris, toilet paper, and other things that would normally break down quickly. My wife read about this product and I bought 2 gallons to try. I poured both gallons in at night and in the morning poured about 4 gallons of boiling water followed by hot water. After a couple minutes it backed up again. I waited 10 more minutes and checked, to my amazement the water had receded. Followed by 10 minutes of hot water and the line is clear. Now I don't have to call little brother the plumber except to tell him this product works!!!!!!!! January 4, 2014
Rated 5.0 out of 5.0 Worked for my very slow drain Our downstairs bathroom clogs up every 7-8 years. I knew it was not the line to the street since the rest of the house was working fine. (We have a huge maple in our front yard and old clay sewer we deal with roots once in a while). There was no backup in the utility/sink washer in the basement. This one line is for an addition so the bathroom is the only thing using it. I tried my 6 foot closet auger going through the toilet but no luck. There is a stand up shower in that bathroom so I tried snaking it from there (the water was backing up into there and draining out slowly over a few hours). That is what worked the last time. No luck. I bought a bottle of this and dumped it in at 5pm. 6am the next morning, I ran hot water for the shower and sink for 10 minutes. Also flushed the toilet 5x...all fixed. This stuff works and I am going to buy a bottle of this to have on-hand next time. $10 versus dealing with a disgusting mess trying to snake sewage backup or even worse, $200+ for a plumber. If you do not have safety google or rubber gloves, walk over to that aisle and pick some up. This stuff is hard core and you want to pour it in very slowly and not spash it. The only minor con is time for it to need to leave it in for 8 hours or longer. So if this happens a few hours before you are having people over, you need to snake. November 20, 2015
Rated 5.0 out of 5.0 by This works! I had the usual symptoms of a backup in my main sewer line: when you flushed the toilet or did a load of laundry, nasty water would start coming out of another drain in a different part of the house. I almost called a plumber but happened to stumble across this product. It is basically a gallon of pure lye, a powerful corrosive that can dissolve anything organic. I poured it in a bathroom sink, didn't use the water for 6 hours, then flushed the toilet. I heard a slight rumbling under the floor and PRESTO! The plumbing is working perfectly now. This will save you hundreds of dollars over calling a plumber if you have the same type of clog. 5 stars. July 7, 2015
Rated 5.0 out of 5.0 by WOW! I live in a house full of girls so at first I thought our toilet was clogged again. After an unsuccessful plunge attempt, I noticed during my plunging that water was coming up out of the shower drain. My wife quickly tried the other bathroom and the same thing occurred. So we had an obvious main sewer line problem. I ran to Home Depot to give this stuff a try. I poured it in the shower drain closest to the main right before bed. Make sure you allow the water to drain the best it can before putting it in. I got up the next morning and ran hot water through the drain for 5 minutes. And WOW! It really worked! February 24, 2015
Rated 5.0 out of 5.0 by Wow After an all day effort to clear my washer drain I was desperate. Plumber is a minimum of $170 and I didn't have it this month. Found this product so I gave it a shot. I disconnected the drain to my garbage disposal & poured a gallon down the other sink. I read that it could damage the disposal. This morning the clog was still there. I poured a large pot of boiling water & ran the faucet. Water started backing up so back upstairs & poured another pot of boiling water down the drain. Checked 5 minutes later & the drain was clear. Ran a rinse cycle with washer and the drain worked better than it ever has. This product is fantastic!!! Plus a money Back guarantee. September 1, 2015
Rated 1.0 out of 5.0 by Fair I thought this product would be the answer to my problems after reading all the good reviews. I am very disappointed the product didn't work as promised. My kitchen sink has been backing up with water for the last year. Within the last week the kitchen sink basically stop draining water. I read all the reviews and followed the advice given by many who posted on this site. I used two bottles to make sure the lines would be opened. My kitchen sink is now draining some but still backing up with water. I can't be sure if the draining is from the product or all the boiling hot water we poured down the sink. At least I don't have a lot of money tied up in this product. It was worth a try. November 14, 2015
Rated 5.0 out of 5.0 by It Does Work bought 2 gal. , this was two months ago - poured one gal. down one night , the second the next night . Did not work , poured hot and boiling water - did not help . Sent in receipts , got refund in under three wks. Clog still there , went back to buy two more gal. - that night poured both down , next morning poured boiling water , guess what - - - it worked , the water is going down just fine , not worried when doing dishes . So I called the plumber and said forget about it ! Saved at least $140.00 Now I will pour some down the drain on a monthly basis . November 5, 2015
Rated 5.0 out of 5.0 by Unbelievable!!!! It took 2 gallons but this stuff works! Follow the directions and you won't need a plummer. Our line was backed up to the point that when the washer drained, all kinds of nasty stuff bubbled up in the tub, shower, etc. The toilets were not flushable without over flowing. I thought we were in for a big expense. Turned out the total cost was $22.00!!! I didn't believe it possible with such a tight clog. No smell, no ventilation needed. I love this product, I love Home Depot for carrying it, as Lowes does not. September 8, 2015
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