What Not to Put Down Your Garbage Disposal

Understanding Garbage Disposals

Garbage disposals are handy devices that help manage food waste. They grind up food scraps, making it easier to dispose of them through your plumbing. However, they are not invincible. Knowing what to avoid can save you from costly repairs and keep your kitchen running smoothly.

1. Grease, Oil, and Fat

Pouring grease, oil, or fat down the disposal is a major mistake. These substances are liquid when hot but solidify as they cool. When poured down the drain, they stick to pipes and create blockages over time. Even small amounts can build up and cause slow drainage or backups.

Example: After cooking bacon, never pour the leftover grease into the sink. Instead, let it cool and dispose of it in the trash or a sealed container.

2. Coffee Grounds

Coffee grounds may seem harmless, but they do not break down well in water. Instead, they clump together and settle in pipes, forming dense masses that block water flow. Over time, this can lead to clogs and foul odors.

Tip: Compost coffee grounds or throw them in the trash rather than using the disposal.

3. Fibrous Vegetables

Vegetables like celery, asparagus, corn husks, and onion skins have tough fibers that wrap around the disposal’s blades and motor. These fibers can jam the unit or cause it to overheat and fail.

Practical advice: Chop fibrous vegetables into small pieces and dispose of the tough parts in the trash.

4. Potato Peels and Starchy Foods

Potato peels and other starchy foods like pasta and rice expand when wet. They can form a thick paste that clogs pipes and coats the disposal’s components. This buildup reduces efficiency and increases the risk of blockages.

Example: Instead of putting potato peels down the disposal, add them to your compost bin or trash.

5. Eggshells

Eggshells are often thought to sharpen disposal blades, but they actually cause problems. The thin membranes inside eggshells can wrap around the blades, and the shells themselves turn into gritty particles that settle in pipes, leading to clogs.

Better option: Dispose of eggshells in compost or trash.

6. Bones

Bones from meat, poultry, or fish are too hard for garbage disposals. They can dull or break blades and cause serious damage to the motor. Small bones may get stuck and jam the unit.

Advice: Throw bones in the trash or use them for broth preparation outside the disposal.

7. Pasta and Rice

Both pasta and rice absorb water and swell, creating thick clumps that block pipes. These foods do not break down easily in the disposal and can cause slow drainage or backups.

Tip: Dispose of leftover pasta and rice in the trash or compost.

8. Non-Food Items

Never put non-food items like plastic, glass, metal, paper, or rubber down your garbage disposal. These materials can damage the blades, motor, and pipes, leading to expensive repairs.

Example: Avoid rinsing off bottle caps, twist ties, or plastic wrappers in the sink.

9. Large Amounts of Food Waste at Once

Even food that is safe for the disposal can cause problems if put down in large amounts. Overloading the disposal can cause jams, clogs, and motor strain.

Best practice: Feed food waste gradually into the disposal with plenty of cold water running.

10. Fruit Pits and Seeds

Hard fruit pits and large seeds, such as those from peaches, cherries, or avocados, can damage blades or get stuck in the disposal. They are too tough to grind properly.

Suggestion: Remove pits and seeds before disposing of fruit scraps.

Conclusion

Knowing what not to put down your garbage disposal helps avoid plumbing issues and extends the life of your unit. Avoid grease, fibrous vegetables, starchy foods, and hard items like bones and pits. Always feed food waste slowly and use plenty of water. Following these tips keeps your kitchen sink flowing smoothly and prevents costly repairs.

Take a moment to check your kitchen habits and make sure you are protecting your garbage disposal. Small changes can save you time, money, and frustration in the long run. If you experience frequent clogs or strange noises, consider consulting a plumber to inspect your system.

For more information on maintaining your plumbing system, check out Sean Dow Plumbing.