Are Duplo Building Blocks Dishwasher Safe? (How To Clean Them)

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Are you a parent looking for an easy solution to clean your child’s beloved Duplo blocks? We’ve all been there – wanting to avoid the tedious task of cleaning each block by hand.

The dishwasher seems like an excellent option but can you actually wash Duplos in the dishwasher or will it damage them?

You should not wash your Duplos in a washing machine or dishwasher as the water gets too hot and it could warp or deform your Duplos. Instead, they should be hand washed in warm water instead.

The high heat and water pressure can lead to melting, warping, and damage to the blocks. But don’t worry, we’ve got you covered!

Read on to discover the manufacturer’s guidelines for cleaning Duplo blocks, alternative cleaning methods, and tips for drying and storing them properly. Let’s keep those childhood memories intact!

Composition and Material of Duplo Building Blocks

Ah, Duplo building blocks. A nostalgic blast from the past, right? Remember those days when you’d sit down with your kids, and the whole world would suddenly be overflowing with creativity?

And then, it would just as quickly be overflowing with a mess that only a parent living through the ordeal of tiny plastic apocalypse can relate to. Let’s dive deep into what these building blocks actually are made of, which will help us understand their cleaning limits.

Understanding the material used

Duplo blocks, created by those ingenious minds at LEGO, are made from high-quality ABS plastic. This makes them not only durable but also able to survive the occasional sibling squabble that ends with flying blocks (we all know how that goes).

  • Made of high-quality ABS plastic
  • Durable and long-lasting

Features that make the blocks sturdy and durable

The reason your 8-year-old’s Duplo tower can withstand your 5-year-old’s Godzilla-like rampage lies in the quality of the ABS plastic. It’s designed to resist wear and tear, maintain its shape and functionality, even when things get a little chaotic.

  • Resists wear and tear
  • Maintains shape and functionality

Now that we’re familiar with the basics, let’s understand how the manufacturer thinks we should be essentially treating (oops, cleaning) these little childhood treasures.

Manufacturer’s Guidelines for Cleaning Duplo Blocks

Official cleaning recommendations from LEGO

I know, I know. We all have our tried-and-true methods we swear by, but it’s always a good idea to check in on official recommendations for cleaning our beloved Duplo-verse.

LEGO recommends cleaning Duplo blocks with mild soap and warm water, avoiding too much heat or exposure to direct sunlight. Seems simple enough, until that risky thought “Oh, dishwashers use soap and water too!” comes to our minds.

  • Use mild soap and warm water
  • Avoid too much heat or direct sunlight

The dishwasher cleaning debate

Dishwasher – the magical savior for every overworked parent. But the big question remains: Are dishwashers safe for Duplo blocks? and Can we throw in those colorful bricks and let the dishwasher do its thing?

Now, buckle up, folks! I’m here to guide you through the potential risks and dangers associated with giving your Duplo blocks a spin in your dishwasher.

Risks and Dangers of Dishwashing Duplo Blocks

Impact of high heat on the plastic

The idea of just tossing Duplo blocks in the dishwasher and walking away might seem tempting, but there’s a dark side to this seemingly genius move. The dishwasher’s high heat can lead to trouble in Duplo paradise.

We’re talking melting, warping, and even discoloration of the blocks. Remember, these childhood memories are delicate and precious –handle with care, my friends!

  • Dishwasher heat can cause melting, warping, and discoloration
  • Handle with care to preserve memories

Issues with the dishwasher’s water pressure

Besides feeling like the Kool-Aid Man bursting through the wall after it’s been reconstructed with Duplo blocks by your little architect – the water pressure from the dishwasher can have similar effects, dislodging small parts, or damaging intricate designs that might be on the special Duplo bricks.

We don’t want to be responsible for crushing any creative dreams!

  • Dishwasher water pressure could dislodge or damage parts
  • We want to nurture, not destroy, creativity

The importance of sorting and separating blocks

Before you even think about substituting human efforts with machines, consider the potential damage to other items in the dishwasher if the blocks aren’t sorted and separated carefully.

We don’t want to hurt innocent dishes and cutlery in the process!

  • Prevent damage to other dishwasher items
  • Ensure proper cleaning of all blocks

Alright, folks, it’s time to explore some alternative methods for those of us who just realized that friendship between Duplo and dishwasher may not be made in heaven.

Alternative Methods for Cleaning Duplo Blocks

Hand washing

Good, old-school hand washing with mild soap and warm water is always a safe bet. Gently scrub with a soft brush or cloth to avoid any damage while embracing that fading art of manual labor, oh-so-nostalgic in today’s automated world.

  • Use mild soap and warm water
  • Gently scrub with a soft brush or cloth

Soaking in a cleaning solution

When your Duplo blocks have seen better days, and hand washing just feels like a task for Hercules, it’s time to step up the game. Mix equal parts of water and mild soap or vinegar and let the blocks soak before scrubbing off the stubborn grime.

  • Soak in water and soap/vinegar solution
  • Allow ample time before rinsing and drying

Steam cleaning

For those who don’t want to expose their beloved blocks to water at all (you know who you are), pull out that handheld steam cleaner! Sanitizing without the use of chemicals or excessive heat, steam cleaning can keep those blocks pristine and germ-free.

  • Utilize a handheld steam cleaner
  • Sanitize without chemicals or excessive heat

Phew! Now that we’ve cleaned our Duplo blocks, let’s not forget the crucial next steps: Drying and storing.

Drying and Storing Cleaned Duplo Blocks

Properly drying the blocks

Dry those fresh and squeaky-clean blocks with care! Avoid direct sunlight or high heat sources, and ensure no moisture gets trapped in the block’s cavities. We want these blocks to last, people!

  • Avoid direct sunlight or high heat
  • Ensure moisture doesn’t get trapped in cavities

Storing the blocks in a clean and organized manner

Give your children’s Duplo blocks an organized home! Store the blocks in containers or bags, keeping a clutter-free and hygienic play area. Plus, this makes clean-up time easier and may just save you from that unfortunate late-night stepping-on-a-Duplo-block incident (ouch!).

  • Use storage containers or bags
  • Maintain a clutter-free and hygienic play area

Now let’s talk about establishing a cleaning routine for your Duplo blocks and teaching your kids the importance of toy hygiene.

Establishing a Cleaning Routine for Duplo Blocks

Importance of a regular cleaning schedule

Keeping Duplo blocks clean is essential for maintaining hygiene and preventing the spread of germs. Regular cleaning helps ensure a healthy environment for both you and your children.

  • Maintain cleanliness and hygiene
  • Prevent the spread of germs

Recommendations for cleaning frequency

Factors to consider when determining how often to clean your Duplo blocks include the number of users and frequency of play. For example, if your child plays with the blocks daily, consider cleaning them at least once a week or more, depending on exposure to germs and dirt.

  • Consider the number of users and frequency of play
  • Clean more often for heavily used blocks

Instill good habits in your children by teaching them about toy hygiene and cleanliness.

Teaching Children about Toy Hygiene and Cleanliness

Encouraging responsible play habits

Teach your children to clean and put away their toys after playtime. This helps prevent accidents and keeps the play area neat and organized.

  • Clean up after playtime
  • Put away toys properly

Helping children understand the importance of clean toys

Make sure your children know that clean toys are essential for preventing the spread of germs and illnesses. By understanding the importance of maintaining cleanliness, they will likely take better care of their toys and keep them in good condition.

  • Prevent the spread of germs and illnesses
  • Ensure the longevity of their toys

As we near the end of our Duplo-cleaning journey, let’s review some common mistakes to avoid when taking care of these beloved building blocks.

Common Mistakes to Avoid when Cleaning Duplo Blocks

A. Using harsh chemicals or cleaning agents: Stick to mild soaps and detergents to prevent damage to your Duplo blocks.

B. Overusing heat or water pressure: Excessive heat or water pressure can cause warping, discoloration, or damage to the blocks. Be gentle with your cleaning methods.

C. Skipping the drying process: It is essential to dry your Duplo blocks properly after cleaning to prevent mold or mildew growth.

Pros & Cons Of Duplo Cleaning Methods

Cleaning LEGO bricks is an important part of keeping them looking and functioning their best. However, with so many different cleaning methods available, it can be difficult to know which one to choose.

In the table below, we’ve compiled a list of the pros and cons of some of the most popular LEGO cleaning methods, including water and soap, vinegar solution, rubbing alcohol, dishwasher, and dry cloth or brush.

By understanding the benefits and drawbacks of each method, you can make an informed decision on which cleaning method to use based on your specific needs and the condition of your LEGO bricks.

Cleaning MethodProsCons
Water and Soap– Easy to do
– Can remove most dirt and grime
– Safe for most LEGO bricks
– Some colors may fade
– Difficult to clean in small crevices
– May require a lot of time to dry
Vinegar Solution– Effective at removing dirt and grime
– Safe for most LEGO bricks
– Can help restore yellowed pieces
– Strong vinegar smell
– May require soaking overnight
– Can cause some colors to fade
Rubbing Alcohol– Effective at removing tough stains
– Dries quickly
– Safe for most LEGO bricks
– Can be flammable
– May cause some colors to fade
– Can be expensive
Dishwasher– Can clean a large amount of LEGO pieces at once
– Can reach small crevices
– Easy to do
– May damage LEGO bricks that are glued together
– Can cause fading of some colors
– May leave soap residue
Dry Cloth or Brush– Quick and easy
– Can remove light dirt and dust
– Safe for most LEGO bricks
– Not effective at removing tough stains
– Can scratch and damage LEGO bricks
– Can push dirt further into crevices

It’s important to note that these pros and cons are general guidelines and may vary depending on the specific situation and the type of LEGO pieces you’re cleaning.

Always use caution and test a small area before cleaning a larger batch of LEGO bricks.


A proper cleaning method for Duplo building blocks will not only ensure that they remain in good condition, but it also guarantees the health and safety of your children.

Though putting Duplo blocks in a dishwasher may seem like a quick and convenient solution, it can lead to damage and discoloration due to the appliance’s high heat and water pressure. Hand washing, soaking, or steam cleaning are recommended alternatives for keeping your Duplo blocks in top-notch condition.

Remember, a clean and organized play area helps your children develop responsible play habits and understand the importance of cleanliness.

So don your cleaning gloves, grab a scrub brush (or a steam cleaner), and give those Duplo blocks the TLC they deserve – all while safeguarding your little one’s health and preserving precious, playtime memories.

Matthew R

Hi, My name is Matt and I am all about toys! When trying to find accurate information online about toys I was finding it difficult so I decided to make this site.

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