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5 Foods You Should Never Put Down the Garbage Disposal

Garbage disposals offer a convenient way to get rid of food waste without stinking up your garbage or adding to the landfill. By chopping food up into small pieces that can then flow freely into sewage systems, they make cleanup quick and convenient. Yet, having a garbage disposal does not give you free rein to dump all your food scraps down the drain. Read on to learn about five foods that you should never put in your garbage disposal.

Peach Pits

You shouldn’t put peach or any other hard pits down the drain. Your garbage disposal works by chopping up food scraps with its rotating blades. If you have ever tried to cut the pit from a peach or avocado, you know this isn’t going to end well. Save yourself the headache and put the pits in the trash or a compost bin.


Pasta expands in water. Even when fully cooked, it will continue to expand if you put it in water. Because there is water in the drain and disposal unit, what started out as a small amount of pasta can quickly grow into a sludgy mess and jam up the blades on a household garbage disposal. If the sludge moves into your pipes, you will likely notice slower draining from the sink. The same goes for rice and other grains that expand in water, so if you put any of these down the drain, you may need to consult professional plumbing services.


Bones are incredibly hard and can cause several problems in your unit. In most cases, they’ll just loudly roll around inside the unit, getting pushed but not chopped by the blades. Eventually, they’ll pass into your pipes and cause a clog or slow drain. If your disposal is able to handle chopping them up, bones will quickly dull the blades and shorten its life span.


Celery, corn husks, and other stringing vegetables should not go into a garbage disposal. The long, fibrous strands that stick to everything on the counter will also stick to the blades of your unit. This can lead to less efficient operation, or even jam the blades on a garbage disposal.

Potato Peels

This is along the lines of pasta and rice. Starchy vegetables like potatoes create a thick sludge when placed in water. This can interfere with blade rotation and cause slow or clogged drains. These should all go into the trash instead of the sink.

Many foods that shouldn’t go into your garbage disposal cause problems beyond the unit. Slow drains and clogged pipes can be avoided by keeping these five foods out of your kitchen garbage disposal.

Tim Esterdahl

Tim Esterdahl is the editor of IFCS blog. He is a married father of three and enjoys golf in his spare time.
Tim Esterdahl

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