​What to look for

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Just like yours, but the wrong colour or body shape.
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Why and how they turn up

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These can come in with untreated substrate, bark, wood, or leaves. You can also get escapees from other enclosures if your security isn't good enough.
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Danger level

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Left unchecked they may outcompete your isopods. If they are a different morph of the same species they can interbreed and cause you to no longer have a pure morph.
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Prevention

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Freezing wood, leaves, and substrate can minimise the risk of wild isopods however the only way to 100% prevent them is to never use anything natural in your enclosure which isn't a viable option.
 

For escapees, ensure there are no vents big enough for them to escape through, bear in mind they can climb many surfaces surprisingly well so height alone isn't a sufficient deterrent. The smallest sizes of mancae in some species can be notorious for climbing far higher than you might expect.​

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How to treat them

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Catch and either release or return them to where they're supposed to be.​

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