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4 Things That Should Never Go Down Your Kitchen Drain
4 Things That Should Never Go Down Your Kitchen Drain
4.8 RATING

4 Things That Should Never Go Down Your Kitchen Drain

Your kitchen sink might seem like a catch-all for cooking waste and cleanup, but treating it that way is a fast track to plumbing trouble.…

August 08, 2026
4 Things That Should Never Go Down Your Kitchen Drain

Your kitchen sink might seem like a catch-all for cooking waste and cleanup, but treating it that way is a fast track to plumbing trouble. Many homeowners don’t realize that everyday substances can wreak havoc on their pipes, leading to clogs, foul odors, and expensive plumbing repair services. To avoid the hassle of a clogged drain cleaning or an emergency call to the plumber in New Jersey, it’s crucial to know what should never go down your kitchen drain.

1. Grease, Fats, and Cooking Oils

One of the most damaging things you can pour down your kitchen sink is grease. After cooking, it may seem convenient to dispose of leftover bacon grease, butter, or cooking oil by washing it down the drain. But as these substances cool, they solidify and stick to the walls of your pipes. Over time, this buildup narrows the passageways and traps other debris, leading to a major clog.

Even small amounts of grease added regularly can accumulate and cause a blockage that requires professional clogged drain cleaning. A better approach? Pour cooled grease into a sealed container and throw it in the trash. Wipe greasy pans with a paper towel before washing them to minimize the residue going down the drain.

2. Coffee Grounds

They might look harmless, but coffee grounds are one of the top offenders in household drain clogs. Unlike other organic materials, coffee grounds don’t break down in water. Instead, they clump together and form a sludgy mess that sticks to other debris inside your pipes.

Many plumbers can confirm that coffee grounds are a leading cause of drain backups in kitchens. To prevent this issue, compost your grounds or throw them in the trash. If you’re a daily coffee drinker, keeping them out of the drain could save you from frequent visits from your local plumbing repair service.

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Chahib Chakrome

Summit, NJ

The service provided was great, nothing to say about the work of the plumber. 5 stars to him. But the company charges felt way too much for the work. We would have liked to have the same plumber take care of other things in the house, but every time he check how much extra the company will charge for the job, the price just got too much. The plumber did an amazing job he selected a beautiful faucet to replace our old one. He did his best. But the company prices have no room for negotiation.

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Plainfield, NJ

A million stars!!!! Steve and Lucas were absolutely amazing. My parents pipes burst and within 4 hours of calling they came and fixed everything!!! Very nice guys and dealt with my panicking. I will always use them if needed in the future and you all should too!!! Thank god for people like this!!! Thank you so much guys!!!

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New Brunswick, NJ

We got very quick service, I think the plumber actually arrived in less than an hour! After reviewing what was happening, he gave us our options and performed the option we selected. This happened in the late afternoon or early evening. It was already dark and there was a lot of snow on the ground.

Steve Smith

Mountainside, NJ

I needed immediate, same day service in the early evening at my home. I went to the internet and looked up plumbing services that offered "24-hour, 7-day a week" availability. The first 3 places I called said that they could not get to me until the following day. Then I called Mr. Rooter. They were courteous and promptly got a technician to my house within an hour and a half. The technician, Lucas Kaufmann, was exceptional. The job was not easy, but he figured the problem out and got me all fixed up within an hour's time. Moving forward, I…

Stephanie Brown

Cranford, NJ

Despite what was quite obviously a busy day (day after Thanksgiving at 10pm) TJ came out and did not leave until the job was done! There were several setbacks, which at the late hour might have prompted him to leave- but he chose to stay and continue until the job was complete! I only have one bathroom so I was really hoping he could make it work, and he really did a wonderful job! So thankful for all of his help! I highly recommend TJ!

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Union, NJ

This is my second time using Mr. Rooter and I have to say they are an excellent company of experienced professionals! The service techs were courteous, experienced and actually spent time trying to figure out the issue before proposing the solution. They were also patient and answered all my questions without rushing the work. I will be using them again.

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Montgomery, NJ

TJ was amazing! 10/10 recommend this company. We were in an emergency state of panic with a burst pipe in the middle of a bad snowstorm. TJ came with knowledge, professionalism, kindness, and found the root of the problem within five minutes of being here. We will be using him again in the spring to fix an outdoor issue he found!

Alan Abraham

Clark, NJ

The technicians were friendly, professional and knowledgeable. The price was too high I believe, but the technicians had no control over that. The technicians took their time and did a great job. I would use them again and also recommend them.

Amy Swart

Berkeley Heights, NJ

Excellent service! Charles and Nicholas of Mr. Rooter arrived to my scheduled service a few minutes early, wore sanitary shoe coverings, and were extremely professional. They found the source of my leak quickly and fixed the issue. While they here, I requested an additional hydraulic heating inspection which they accommodated. They were very knowledgeable and provided helpful tips. I highly recommend this team and I will definitely call them for all future plumbing needs!!

JACKY Coppola

Wall Township, NJ

TJ came to my aid as the water pipe froze in my house. Although nothing could be done he gave me hints of what could be done my me which was very helpful. I found TJ very professional and caring about my situation. The best part of the very long night was the dogs adored him one wanted to accompany him to his next job. Thank you for employing such an amazing man. Plus today there is water running in the house. Thank you TJ and thank you Mr. Rooney plumbing for employing a man with helpful hints!!!!!

3. Eggshells

Eggshells may seem fragile enough to flush down the drain, but they can cause more harm than you think. The sharp edges of the shells can combine with grease and other food particles to form tough, gritty clogs. If you have a garbage disposal, eggshells can also damage the blades and lead to costly repairs.

A common myth is that eggshells sharpen garbage disposal blades—this simply isn’t true. The reality is that they increase the risk of damage and can lead to unnecessary service calls. Instead, toss eggshells into the trash or compost bin where they can break down naturally.

4. Starchy Foods Like Pasta, Rice, and Potatoes

Starchy foods such as pasta, rice, and potato peels are sneaky drain cloggers. When wet, these items expand and become gummy, sticking to the sides of pipes and trapping other waste. Over time, this builds into a thick blockage that can stop your kitchen sink from draining properly.

Even with a garbage disposal, these foods don’t break down well and often lead to slow drains or full-on clogs. If you’re dealing with sluggish draining and suspect starchy buildup, it’s best to call a plumber before the issue worsens. In some cases, professional clogged drain cleaning in Rumson Township is the only way to restore full function to your plumbing system.

Protect Your Pipes with Smart Kitchen Habits

Maintaining a clean, functional kitchen drain isn’t just about convenience—it’s about protecting your home’s plumbing system. Avoiding these four common culprits—grease, coffee grounds, eggshells, and starchy foods—can significantly reduce your risk of needing a plumbing repair service.

When in doubt, remember: if it’s not water or a truly biodegradable liquid, it probably doesn’t belong down your sink. And if you ever do encounter a stubbo clog, don’t hesitate to contact a professional plumber from Mr. Rooter Plumbing for expert clogged drain cleaning and repair. A small bit of prevention today can save you from a costly plumbing disaster tomorrow.

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