Free Shipping and BOPIS


Model # ZUPRDO128

Internet # 202333071

Store SKU # 338342

1 Gal. Professional Strength Drain Cleaner

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




Model # ZUPRDO128

Internet # 202333071

Store SKU # 338342

Store SO SKU # 1001088569

The ZEP 128 oz. Professional Strength Drain Opener is a powerful, thick, fast-acting drain opener that pours through standing water to attack many types of clogs. Safe for pipes and septic systems, this drain opener treats 8 drains.

  • Attacks many types of clogs
  • 128 oz. container provides 8 treatments
  • Works in as few as 15 minutes
  • Liquid formula pours through standing water to attack the clog
  • Powerful, thick, fast-acting formula
  • Safe for pipes and septic tanks
  • Satisfaction guaranteed

Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents. Download a free copy from the Adobe Web site.


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 


Rated 3.4 out of 5 by 38 reviewers.
Rated 4.0 out of 5.0 by Works on Hair and Soap Scum This is an Alkaline based drain cleaner (Bleach and Lye) which works well especially on sinks or shower drains which are clogged by hair and soap scum. This tends to be cheaper than other fancier foaming brands but I find it works just as well. The only other product I have used which worked better was some dry pellet form drain cleaner which I used in the middle east. It literally smoked and boiled in the pipes. Not sure if you can legally buy that in the US but it may be worth a shot if this product does not work for you. July 21, 2013
Rated 2.0 out of 5.0 by Vinegar worked better when it mattered most I've used this de-clogger on sinks with minor backup and it worked ok. But I had a shower that had lots of hardwater buildup and probably regular gunk too that was draining very slowly. After several treatments of the Zep, no change. So I tried a half gallon of cheap vinegar followed by boiling water, cleared the problem right up. And at least the much cheaper vinegar that's left over has many other uses. Why use an expensive industrial strength chemcial when a cheap, naturally occuring chemical works better? July 13, 2013
Rated 1.0 out of 5.0 by Product didn't work for me. I followed the instructions, but ultimately had to call the plumber. I was hoping I wouldn't have to do that. July 24, 2013
Rated 1.0 out of 5.0 by Worthless for us. Did not open the drain. I used the recommended amount of Zep to try and open the sink but no luck. Tried the same amount till the whole gallon of this stuff was gone but nothing doing. On recommendation of my MIL tried Liquid plumber and that too only 60 oz and voila 10 minutes it took before the sink was in full working order again. Useless product, a total waste of money June 24, 2013
Rated 5.0 out of 5.0 by Worked exactly as promised Very stubborn drain - almost clogged to the point of no water moving (tub) at all. Nothing I had tried worked. I have used ZEP products in the past with great success. So I found their guaranteed clog remover in the plumbing section. Drain opened as stated on the packaging. Running free and clear now. Extremely pleased and will continue to use products by Zep - now I will go to them first! December 10, 2011
Rated 1.0 out of 5.0 by Waste of money and time Sent wife to Home Depot to get Industrial strength Drano, store clerk highly recommend this junk, did not work after 24 hours. April 12, 2015
Rated 3.0 out of 5.0 by Did not work as advertised. Had to snake it out After 2 bottles of ZEP I had to return to store and purchase a "snake" to unclog the drain. Sorry no more Zep May 29, 2012
Rated 5.0 out of 5.0 by Buy it: Effective and cheap. Our Problem: In 60 year old bldg low draining of bathroom basin that has ~8 foot lateral pipe with low gradient to vertical drop. Other cures ( chemicals, plunger ) only partial successful and didn't last long. Bought this item 4 months ago. Used double quantity (32 ounces) . It worked! Two weeks drain slowing up again, repeated with 32 ounces; Working fine. At $2.50 per treatment it's cheap & effective. January 24, 2015
  • 2015-11-23 T10:24:32.638-06:00
  • bvseo_lps, prod_bvrr, vn_prr_5.6
  • cp-1, bvpage1
  • co_hasreviews, tv_38, tr_38
  • loc_en_US, sid_202333071, prod, sort_default
2 >>