SNACK: 3-line summary
- Hand-wash ordinary LEGO bricks with a soft cloth or sponge in water no hotter than 40°C (104°F).
- Mild detergent is optional; rinse well with clear water after using it.
- Wipe electronic components and sensitive metal-containing pieces with a cloth moistened with water and mild detergent free of perfume and oil.
What temperature should you use to clean bricks, and what about sensitive parts? Here is a practical guide based on LEGO’s published care instructions.
Hand-wash ordinary bricks at no more than 40°C
LEGO recommends cleaning bricks and pieces by hand with a soft cloth or sponge and water no hotter than 40°C (104°F). Higher temperatures may affect the quality of the bricks, it says.
You can add mild detergent to the water. If you use it, rinse the pieces well with clear water afterwards.
Electronic and metal parts, and drying precautions
For electronic components and other sensitive bricks and pieces containing metal, LEGO recommends a cloth moistened with water and mild detergent without perfume or oil.
Do not put pieces in a washing machine or dishwasher. Do not dry them in an oven or microwave, with a hair dryer, or in direct sunlight. LEGO says very hot bricks may change shape and no longer work.
Snack Girls say
Red: I’d like to try a soft sponge on the little bricks. I’ll look out for electronic parts separately.
AIKO: The method changes with the temperature and the part. My circuits will also decline a swim, thank you.
Source · Checked November 11, 2026
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