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7 Things You Should Never Put Down Your Garbage Disposal
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7 Things You Should Never Put Down Your Garbage Disposal

Your garbage disposal can handle a lot, but it was never designed to handle everything. The list of…

281-247-5334
Apr 27, 2026

Your garbage disposal can handle a lot, but it was never designed to handle everything. The list of things that get fed into disposals on a daily basis is surprising, and a good chunk of those items are responsible for the jammed motors, dull blades, and backed-up drains we get calls about. At Mr. Rooter Plumbing, we've cleared enough disposal-related clogs to know what causes them, and this post breaks down the seven worst offenders so you can keep yours running.

7 Things You Should Never Put Down Your Garbage Disposal

Grease, Fat, and Cooking Oil

Pouring bacon grease or leftover cooking oil down the disposal seems convenient in the moment. The problem is that grease doesn't stay liquid. It cools, solidifies, and coats the inside of your pipes, which narrows the drain passage with every pour.

The buildup doesn't stop there. Solidified grease catches other debris, and what starts as a thin film becomes a blockage. Experienced plumbers regularly find grease accumulation stretching several feet down the drain line, not just near the disposal. Scrape grease into a container, let it harden, and throw it in the trash. For residual oil in pans, wipe them with a paper towel before rinsing. It's a small habit that can prevent a big repair bill.

Grease, Fat, and Cooking Oil

Pouring bacon grease or leftover cooking oil down the disposal seems convenient in the moment. The problem is that grease doesn't stay liquid. It cools, solidifies, and coats the inside of your pipes, which narrows the drain passage with every pour.

Because they compact so easily, even moderate amounts build up fast. Compost your grounds or toss them in the trash. They're actually useful in a garden, so the disposal isn't the best destination for them anyway.

Fibrous Vegetables

Celery, asparagus, artichokes, kale stems, and corn husks all have long, stringy fibers that don't cut cleanly. When these go into the disposal, the fibers wrap around the blades and motor shaft instead of breaking apart.

A disposal tangled with vegetable fibers will slow down, vibrate, or stop mid-cycle. In more serious cases, the motor burns out from the resistance. A garbage disposal replacement becomes necessary when the motor is compromised, and that's a preventable expense. Toss your fibrous vegetables in the trash or compost bin. Peeling them into a bag rather than the sink makes this a non-issue.

Eggshells

The idea that eggshells sharpen disposal blades has circulated for years. It isn't true. Disposals use impellers to grind waste against a grind ring. There are no blades to sharpen, and eggshells don't improve their function.

What eggshells do produce is a fine, sandy membrane residue that accumulates in the drain line. That grit combines with grease and other debris and forms stubborn blockages. The shells themselves grind into small particles that contribute to the buildup rather than clearing it.

Skip the eggshells. Compost them or throw them away. The sharpen-the-blades advice isn't grounded in how disposals really work.

Pasta, Rice, and Starchy Foods

Cooked pasta and rice absorb water. They do it in your pot, and they continue doing it in your drain. Rinsing a small amount of leftover rice down the disposal feels harmless, but those particles swell inside the pipe and trap other debris.

Starchy foods also leave a sticky residue that clings to pipe walls and the disposal interior. The coating attracts other particles and accelerates clog formation. A local plumber called out for a slow kitchen drain will frequently find a combination of starch residue and grease at the source. Scrape plates into the trash before you rinse them. A quick wipe removes most of the residue before it reaches the drain.

Bones and Fruit Pits

Chicken bones, steak bones, peach pits, avocado pits, and cherry pits are simply too hard for a residential disposal to process. The impellers aren't built to handle that density. Putting hard materials in the disposal produces one of two outcomes. The unit jams and trips the reset switch, or the impellers chip, and the motor takes on damage it can't recover from.

Repeated attempts to force hard waste through the unit shortens its lifespan considerably. When the damage is severe enough, garbage disposal replacement is the only fix. Bones and pits go in the trash. There's no workaround that makes them safe to grind, regardless of the disposal's horsepower rating.

Chemical Cleaners and Harsh Substances

Bleach, drain cleaners, and caustic chemical products are marketed as drain solutions, but they cause damage to disposals. The rubber seals, gaskets, and interior components degrade when exposed to harsh chemicals. Corrosion sets in, and the unit develops leaks or mechanical failure.

Liquid drain cleaners are especially problematic. They're formulated to dissolve organic matter, and the disposal's components count as organic matter in that chemical process. Plumbers in Arcola, TX see disposal failures linked to chemical cleaners a lot, and the damage isn't always immediately obvious.

Clean your disposal with ice cubes and kosher salt to scour the interior, or use a small amount of dish soap with cold running water. Baking soda and white vinegar work for odor control. None of these options will damage seals or corrode metal components.

Keep Your Disposal in Good Shape

If your disposal is already jamming, draining slowly, or making unusual sounds, don't ignore it. A qualified plumber can diagnose the problem before it reaches the point of full garbage disposal replacement. Mr. Rooter Plumbing offers experienced, reliable service for disposal repairs, clogs, and full replacements when the unit is beyond repair. Our licensed plumbers are background-checked and upfront about pricing before work begins. Call us to schedule a service, and we'll get your kitchen back in working order.

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Mr. Rooter Reviews

Read what Our Happy Customers Have to Say about Our Services.

Shaun definitely over delivered in his service. He came in and replaced the worn faucet on ourr kitchen sink. As he did his work,  he gave us many tips on ways to preserve the life of our plumbing hardware. And with his warm personality, we discovered that he's a dude that's serious about his Philly cheese steaks. So now we trust him with our plumbing needs AND his referrals to places that serve the best Philly cheesesteaks in the Houston area.

Beverly Hammond

League City, TX

Shaun at Mr. Rooter Plumbing did a great job. He was quick and courteous.  He was able to identify the issue immediately and gave me tips on how to prevent it going forward. I would definitely recommend them to others.

Courtney Smith

Webster, TX

Steven and Fred were both very thorough and efficient. I was impressed with their overall knowledge and ability to diagnose the issue quickly and solve the problem. I was thankful for their quick attention because we are going out of town soon and this gives us piece of mind. They also recommended ways to help prevent this from happening in the future which I appreciated. Recommend them again for sure.

Brendan

Pasadena, TX

Mr. Rooter came promptly to look at a leak from a bath tub. The guys were super nice, found the problem quickly and fixed it up. I appreciated the live map to see exactly when they would arrive. Would recommmend!

Carrie Tydingco

League City, TX

Shawn did an amazing job! We are so happy with the service! I highly recommend Shawn for any type of plumbing needs you may have. He was helpful, knowledgeable, and very professional!

JO

Iowa Colony, TX

I was experiencing clogged drains on a dual vanity bathroom sink. Technician Josh diagnosed the problem, recommended the necessary repair, and corrected the problem. The drains are cleared. He was efficient, professional and knowledgable. Thank you!

Laronda Coleman

League City, TX

Mr. Rooter, is excellent at his job and very kind. He is quick and he don’t goof off. He came in and reinstalled my kitchen, the guy who put in the sink originally did a very poor job. Mr. Rooter cleaned up his mess!, I’m so grateful, my sink looks beautiful now… thank you sir

Ms Jackson

Hillcrest, TX

Had a great experience with Steven and Fred, they were both professional and efficient in finding the issue and guiding me on our next steps. Mr Rooter came to us through American Home Shield and so far it’s a good experience with quick response.

Shahida Vere

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Mr. Rooter plumbing did a fantastic job for us during a difficult time. Our plumbing was destroyed due to a storm. John Short and his crew took great care of us. I highly recommend them. Customer for life.

Marie Monis

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Mr. Rooter plumbing provided excellent service and technician Steven, was outstanding.  He arrived on time, reviewed the issues we were having.  He addressed and explained the solutions clearly. His professionalism and his care. I would definitely highly recommend. Thank you again for all you do.

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I returned home from an extended assignment out of state to find two of my three toilets leaking. The water company actually sent me a notification stating that I was consuming over 100 gallons/hour! Within 24 hours of my return, my home warranty company assigned Mr. Rooter to my case, & Josh was a consummate professional in way (in spite of having to work on toilers that had been sitting idle, without A/C, for months. He explained exactly what the issues were after listening carefully to my description of the problem, & immediately set about making the repairs. He was even kind enough to help me replace the toilet seats that had been ruined by the prolonged exposure to running water. An all-around great experience (under the circumstances). Kudos to Mr. Rooter, & a big thanks to Josh for his competence, promptness, & professionalism.

Stacey Lusk

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These guys replaced my water main with fast turnaround time a fair pricing. They went the extra mile and dug out the trench 24” deep. Gavin and Richard did a great job.

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So excited to share such great service we received from Justin with Mr. Rooter, he was such a polite and attentive to our needs we explained that we had a leak somewhere in the utility room, he jumped right in located the leak explained the type of leak we had and gave us a great price to repair.. Justin's workmanship and expertise got the job done and we are very happy.. Definitely will be calling Mr. Rooter and requesting  Justin...thank you

Virginia Parrish

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I had a shower faucet that would not turn off. Mr. Rooter Plumbing sent Mr. Shaun out and he was awesome! Very professional, knowledgeable and friendly. He got right in here took care of the issue quickly.

Kim Roberts

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Sean did an excellent job from start to finish. He was very professional, communicated clearly, worked quickly, and provided a lot of helpful advice throughout the process. His quality of work was great and he made sure everything was done right. Definitely appreciate his service and highly recommend him!

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Fred and Steven came out to check on my garbage disposal that hasn’t been working for me! They were on time, super considerate, and Fred even taught me how to fix it if it goes out again! I will definitely keep their number around for any future issues! :)

Jordan Ruby

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Justin was top tier! Not only did he solve our 3 backed up sinks quickly and thoroughly, he provided insight on the cause and preventative tips to ensure it doesn’t happen again. We’ve had multiple plumbers come out through our home warranty and none took the time and effort to get to the root cause like Justin!

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Shaun has to be the glue of League City location. Top tier customer service, genuine, knowledgeable, and fast-acting. He diagnosed and treated thecause then the symptoms of my kitchen plumbing issues. He made the system better than the original builder. I would recommend Shaun every time!

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Steven and Justin came out to my home today to service two of toilets that were having flushing issue. Both men were very skilled and knowledgeable and they fixed my plumbing issues literally in a matter of minutes. They also advised me that it would be in my best interest to replace both toilets with American Standard Champion and they recommend this brand as being number 1 in the industry and guarantee me a 5 yr warranty. Being that my toilets are rather old and seem to be having flushing issues.  Lastly, I would just like to say that I highly recommend this company and these two kind and respectful gentleman to all customers. Thanks Steven and Justin for doing such an amazing job today. I am more than satisfied with your work and your level of service that you provided me today.

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Steven and Fred where a breath of fresh air.  1 they arrived on time ahead of schedule so I didn't have to wait all day for my time window.   Mr Rooter was the 3rd company that came out to fix my dishwasher.  Steven assessed the issue and it was an extremely simple fix.  He made my plumbing work better vs redoing what someone did before and doing patch work.  Both gentlemen where polite and patient.   I will be requesting them only from here on out

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Service was excellent. Scheduling easy, Sarah was professional, very knowledgeable and willing to assist. Larry was very professional, Pleasant and very knowledgeable. He was able to repair our toilet. Cleaned up after himself.

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Justin came out to check out a few things in our home. He was able to quote us a fair price and was extremely professional and up front. We trust him with our home and I recommend Mr Rooter.

Kaitlyn Elder

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I can’t rave enough about how informed, knowledgeable and nice Steven was. They came out quickly and serviced our issue in no time. Truly appreciate the customer service and care they showed! Definitely recommend this company and especially Steven! Fred was helping and just as nice and helpful!

Nesh Aqrawi

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Update: Mr. Rooter Plumbing came back out and made things right. I want to specifically compliment Steven and his helper — they did a great job. They were professional, thorough, and took the time to properly inspect the issue, figure out what was wrong, and explain how to resolve it. I really appreciate their follow-up and the care they showed in fixing the situation.

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Tyler and his team were true professionals when it came to a tough job. They removed our old water heater from the attic and carried it down two flights of stairs without any issues. The new install was quick and efficient, and they were very respectful of our time and home. Everything was done smoothly and without error. Highly recommend!

Ethan Guidry

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Mr. Tyler and Mr. Hane came to do work us on 12/12/25.  They called me the day of appointment 15 minutes before they arrive. they were timely, extremely professional and knowledgeable. Explained to me what they will be doing, the estimated time it would take them. Since I used my home warranty, the work was done at no cost to me at the time of service. Tyler and Hane went above and beyond by inspecting and tightening my backyard leaking faucet. Excellent service.

Lukas Kahsay

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Floyd provided great customer service, was friendly, explained servicing, and came in the window as promised. Helped in what was a two-week nightmare! The only downside was the company taking two weeks to fix! But Floyd was great!

La Toya

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Shaun was absolutely fantastic! Came out on time, was super professional, extremely knowledgeable, and took the time to explain what the issues were with both toilets in need of repair and what was needed to resolved them. He was able to fix one on the spot in a flash and it’s working perfectly now. He left the area clean and tidy. He’ll be back to fix the other requiring addition assistance and extensive work, but he definitely knew the issue straight away. It’s hard to find reliable service these days, but Shaun truly exceeded expectations. I would highly recommend him to anyone needing plumbing work. Thank you so much Shaun!!

Rachel Joseph

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Fred and Steven arrived promptly and professionally to resolve a plumbing issue in our new home. They came to us through American Home shield as well. They were both kind and professional cleaning up behind them and making sure all my questions were answered.

Rebecca Bedell

Nassau Bay, TX

Fred come over from Mr. Rooter plumbing an amazing guy very professional honest and upfront helped us out quick and the job was excellent. I would highly recommend Mr. router plumbing and especially Fred. If you’re fortunate enough to get Fred you’ll be doing good thank you so much Fred

Jason

League City, TX