Ed Yong recounts how the spider mite Stigmaeopsis longus gets a little OCD with the cleaning:
[H]ygiene is paramount. For example, the colony’s members all use a toilet at the entrance of the nest, never defecating inside. They’re also fastidious cleaners and Miki Kanazawa from Hokkaido University has found that they scrub using the same substance that they build their homes with: silk.
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