Is It Ok To Put Plastic In The Dishwasher

In today’s fast-paced world, the dishwasher has become an indispensable appliance in many households. It saves time and effort, making the chore of washing dishes a breeze. However, a common question that arises is whether it is safe to put plastic items in the dishwasher. In this article, we will delve into the do’s and don’ts of putting plastic in the dishwasher, exploring the potential risks and benefits.

The Convenience of Dishwashers

Dishwashers have revolutionized the way we clean our dishes. They offer a quick and efficient way to get our dinnerware, cookware, and utensils sparkling clean. No more standing at the sink, scrubbing away food residues for hours.

Understanding the Concerns

Putting plastic items in the dishwasher raises concerns for many people. Let’s address these concerns one by one.

1. Melting Plastic

The most common fear is that the heat inside the dishwasher will cause plastic items to melt. This concern is valid to some extent, as certain types of plastic are not dishwasher-safe.

2. Chemical Leaching

There’s also the worry that high temperatures and strong detergents might cause chemicals to leach from the plastic into your dishes, potentially harming your health.

Dishwasher-Safe Plastics

Not all plastics are created equal, and some are more dishwasher-friendly than others. Here are the types of plastic that are generally safe to put in the dishwasher:

1. Polypropylene (PP)

Polypropylene is known for its heat resistance and durability. It’s commonly used for food storage containers, and these can generally be safely placed in the dishwasher.

2. High-Density Polyethylene (HDPE)

HDPE is another dishwasher-safe plastic. It’s often used for items like milk jugs, and you can typically wash HDPE items in the dishwasher without worry.

3. Acrylic

Acrylic plastics are often found in drinking glasses and certain kitchen tools. They are generally safe for the dishwasher, but it’s best to check the manufacturer’s recommendations.

Dishwasher-No-Go Plastics

On the other hand, some plastics are not suitable for the high heat and harsh detergents of the dishwasher. Avoid putting the following types of plastic in your dishwasher:

1. Polyvinyl Chloride (PVC)

PVC can release harmful chemicals when exposed to heat, making it unsuitable for the dishwasher.

2. Polycarbonate (PC)

Polycarbonate plastics, commonly found in some water bottles and baby bottles, are best hand-washed as they can leach harmful substances under high heat.

Tips for Safely Dishwashing Plastic

For those plastic items that are dishwasher-safe, here are some tips to ensure they come out unscathed:

1. Use the Top Rack

Always place plastic items on the top rack of your dishwasher. This is usually the cooler and less aggressive part of the machine.

2. Avoid Heated Drying

Turn off the heated drying cycle if your dishwasher has this option. Plastic items can warp or soften when exposed to high heat.

3. Use a Mild Detergent

Opt for a mild, eco-friendly detergent to reduce the risk of chemical reactions with plastic.


In conclusion, it is generally okay to put plastic in the dishwasher as long as you choose the right types of plastic and follow some basic guidelines. However, for plastics that are not labeled as dishwasher-safe or if you have any doubts, it’s best to hand wash them to avoid potential damage or health concerns.


1. Can I put all types of plastic in the dishwasher?

No, not all types of plastic are dishwasher-safe. It’s essential to check the label on the plastic item or refer to the manufacturer’s recommendations.

2. What happens if I put non-dishwasher-safe plastic in the dishwasher?

Non-dishwasher-safe plastics can melt, warp, or release harmful chemicals when exposed to the high heat and strong detergents used in dishwashers.

3. Are there any eco-friendly alternatives to plastic dishes?

Yes, you can consider using eco-friendly alternatives such as glass, stainless steel, or bamboo dishes, which are generally safer for the environment.

4. Can I wash plastic cutting boards in the dishwasher?

It depends on the type of plastic. Some plastic cutting boards are dishwasher-safe, while others are not. Always check the manufacturer’s instructions.

5. How can I remove melted plastic from the dishwasher if it accidentally melted on the heating element?

To remove melted plastic from the dishwasher’s heating element, turn off the power, allow it to cool, and carefully scrape off the plastic with a plastic scraper or a wooden spatula. Be cautious not to damage the heating element.

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