| 21. | Other threats include scale insects, poaching and habitat destruction and degradation.
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| 22. | The culprits are soft brown scale insects, common on many houseplants.
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| 23. | When the scale insects feed, they excrete waste in the form of honeydew.
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| 24. | Lac was once extracted from scale insects but is now replaced by synthetic substitutes.
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| 25. | Scale insects suck sap from plants, are stationary and covered by a flattened disk.
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| 26. | They typically live among mosses and leaf litter which is unusual for scale insects.
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| 27. | Mature scale insects can be extremely frustrating because they're protected by a shell-like cover.
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| 28. | Successful past projects include those on dust control, avocado growing, scale insects, and mulching.
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| 29. | It will strip bark in a search for scale insects.
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| 30. | In a few months, the beetles had multiplied prolifically and devoured the scale insects.
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