So you buy used LEGO sets at garage sales, eBay, Craigslist, or thrift stores and discover that they’re dirty and not looking good?
Or maybe you’ve just brought your old sets out of storage and found that they’re dusty and want to wash them — but you’re wondering: can LEGOs be washed?
The answer is yes. LEGO bricks are made from ABS plastic, which is waterproof and can be safely washed with mild detergent and water. However, the water temperature should not exceed 104°F/40°C, as higher temperatures may damage the parts.
Now that you know LEGO bricks can be washed, here’s a complete step-by-step guide to safely cleaning LEGO parts and what to avoid.
Table of Contents
How To Wash LEGO Parts
LEGO has officially warned against using dishwashers or washing machines. The safest and most effective method is handwashing at a temperature not exceeding 104°F/40°C. Here’s how to do it:
Washing Bulk LEGO Bricks
- Disassemble all the pieces.
- Set aside any printed or stickered pieces, minifigure torsos, or cloth elements.
Fill the bin with cold or lukewarm water.
Never use hot water. Add a few drops of mild detergent.- Swirl with your hands and let it soak for 20 minutes.
Prepare a second bin with clean water.
Rinse the bricks in smaller batches to remove soap residue.- Optional rinse method:
Use a mesh bag to rinse bricks under running water, but ensure a drain catcher is in place to avoid losing pieces.
Important Note on Printed and Stickered Parts
Do not submerge printed or stickered LEGO elements.
Instead, clean them individually using a soft, synthetic cloth slightly dampened with water. Avoid scrubbing, soaking, or using chemical cleaners.
How To Dry LEGO Bricks
Never dry LEGO bricks in an oven, microwave, or with a hairdryer.
Here’s how to dry them properly:
- Spread the wet bricks on a clean towel.
- Use multiple towels if needed to avoid stacking.
- Place the towel in front of a fan to speed up drying.
- Turn the bricks occasionally so they dry evenly.
Drying may take 1 to 3 days, depending on the quantity and room humidity.
Can You Wash LEGO In The Washing Machine?
Technically, yes, but it is strongly discouraged.
LEGO has officially advised against using washing machines or dishwashers, as the agitation and heat can damage the bricks and printed designs. This also applies to drying with household appliances like ovens, microwaves, or hairdryers.
What Is the Best Way To Wash LEGO?
By hand, using lukewarm water and mild detergent.
Rinse thoroughly and air dry at room temperature. This is the safest method and helps your bricks last longer.
Final Thoughts
You can wash LEGO bricks safely using lukewarm water and mild detergent, just avoid dishwashers, hot water, and mechanical dryers. For drying, spread them on towels and use a fan to speed things up.
Treat printed pieces, stickers, and cloth elements gently, and your LEGO collection will stay clean, safe, and ready for building fun.
