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🚿 Keep your drains flowing like your career—unstoppable and fresh!
Zep Drain Defense is a professional-strength, enzyme-based liquid remover designed to break down tough pipe buildup safely and effectively. Suitable for sinks, tubs, garbage disposals, RVs, and grease traps, it offers up to 21 months of clog protection while being safe for PVC and septic systems. Its eco-friendly formula decomposes into harmless CO2, minerals, and water, making it a smart, sustainable choice for maintaining smooth, odor-free drains with minimal effort.























| ASIN | B001AZQR9C |
| Best Sellers Rank | #957 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #5 in Commercial Drain Openers #16 in Chemical Drain Openers |
| Brand | Zep |
| Brand Name | Zep |
| Customer Reviews | 4.0 out of 5 stars 3,903 Reviews |
| Global Trade Identification Number | 00021709011302, 00021709600629, 20021709600623, 40021709600627 |
| Included Components | Concentrate |
| Item Form | bottle |
| Item Type Name | Zep Drain Defense Pipe Build-Up Remover - 64 Ounces - ZLDC648 - Professional Strength Liquid Pipe Build Up Remover,GREEN |
| Item Weight | 4.7 pounds |
| Liquid Volume | 64 fluid ounces |
| Manufacturer | ZEP COMMERCIAL PRODUCTS |
| Model Number | ZLDC648 |
| Number of Items | 1 |
| Package Size Name | 64 Ounces |
| Part Number | ZLDC648 |
| Product Benefits | Eliminates clogs, restores flow, and provides 21 months of drain protection |
| Scent | Unscented |
| State of Matter | Liquid |
| State of matter | Liquid |
| UPC | 021709600629 021709011302 |
| Unit Count | 64 Fluid Ounces |
| Warranty Description | Warranty |
P**A
Easy to use and does a fantastic job. HIGHLY RECOMMENDED.
This is the best product I have found for maintaining clean sink and shower drains. No need for harsh chemicals just to maintain clean pipes. I have not noticed a smell nor odor like harsh cleaning products have. Every few weeks, before taking a shower, I often pour the recommended amount down the shower/bath drain. I then use the toilet, shave, etc. It says to leave in for 15 minutes before flushing with warm water so I just plan accordingly. My shower drain was running very slowly so I started using this. After 4 times over a month period, everything was cleared and running smoothly. I now use it every few weeks to maintain the shower/bath drain. Container makes it easy to open and pour without any fuss or mess. Great value for the money. A fraction of the cost of some other brands but works just as well. I get the case of 8 to save on costs and so I make sure to have them on hand by each sink and shower/bath. I am extremely happy with this product. HIGHLY RECOMMENDED
J**Y
WORKS -- all that matters
Zep is my 'go to' for a clogged toilet. Might not work on first try ... or second ... even third ... BUT it eventually works and isn't as 'messy' or gross as using a snake. ~half bottle, 12 hour wait, HOT water chaser for 15 minutes ... flush *use when the house has multiple toilets because the clogged toilet will be unavailable **IF you need immediate results, use a snake or call a plumber
K**N
Seems to work ….
I use this once a week in our kitchen drain I make sourdough and discard daily . I try to make sure it does t go down the drain but into the trash . It has nice markings on the side for ease of use .
P**T
If you don’t use it you don’t understand plumbing.
I had a septic system for 20 years and I know enzymes work because I checked inside the tank to see what the results were. Your plumbing leads to the sewer system or a septic tank and if it works in the tank, it’s working in your pipes. It couldn’t be easier to use so it’s kind of something you’re crazy not to do. If you don’t think you need it, you don’t understand how plumbing works. Technical detail for skeptics: The standard fall (slope or pitch) for a residential sewer and drain pipe is 1/4 inch per foot (a 2% grade) for pipes 3 inches or smaller, and 1/8 inch per foot (a 1% grade) for larger 4-inch pipes. That stuff is sitting in the pipe. “Ah Ha moment “ lol
C**T
Waste of money, doesn't work!
Used this twice in all my drains as directed, and there is no difference I still have drain flies flying around! 😡 Total waste of money!
R**M
More for preventive maintenance
Didn't clear my drain. Might be good for regular use to keep drain clear just not for bathrooms drains. Ended up ordering plumpers acid drain cleaner which did the job.
S**S
Clears slow drains sinks, bathtubs and showers
This product works! Poured it into dish sink drain - only takes a small amount - let it sit for short time poured in hot water and sink drains like new. This product family is best on market nin my opinion. We use all their products.
E**.
great stuff for slow drain maintenance
Great product nothing else keeps the grime down and the drain fast quite like this. You can get a little cheaper in the store, but the convenience can’t be beat.
4**R
The best drain care liquid ever!
Take my word for it. You can't see the build up inside your drains and pipes. Don't use harsh chemicals. They will destroy you pipes. Use Zep. Monthly, regular usage of Zep will ensure that your pipes stay clog free. Eliminate costly visits from the plumber. Use Zep today!
J**Y
It works
Good quality and great for my plastic pipes since it is not corrosive. It provided better results than Draino for my metal pipes as well.
D**W
Good for drain monthly maintenance.
purchased to use on a monthly basis to prevent drain enzyme build-up.. I live in a building built in the 70's and the plumbing system is not great so hopefully monthly doses of Zep will help.
A**T
Saved me money on calling a plumber
I don’t usually write reviews, but after battling my kitchen sink for days, I feel like I just won a war. Plungers? Useless. Every other drain cleaner I could find? Nope. Even my auger failed me. I was this close to calling a plumber, but I figured I’d take one last shot with this product. And guess what? It actually worked! Took a few rounds—my clog was determined—but I could see progress each time, my sink slowly admitting defeat. Now that my pipes are back in working order, I’m not taking any chances and ordered another bottle for monthly maintenance cause there is no way in hell I'm going through all that again.
M**E
Arrived without a lid…
Very disappointed. Product arrived without a lid. It was simply sealed with a thin foil. Not to mention the bottle is very expensive…
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