| 11. | The most commonly recommended barrier is diatomaceous earth, the powdery remains of prehistoric shellfish.
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| 12. | Sometimes diatomaceous earth is found on the surfaces of deserts.
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| 13. | Continue to spread diatomaceous earth to control slugs and ants.
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| 14. | But at last I've made my choice : Diatomaceous earth.
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| 15. | While diatomaceous earth performed poorly, silica gel may be effective.
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| 16. | Food-grade diatomaceous earth has been widely used to combat infestations.
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| 17. | This would have the very same effect as diatomaceous earth.
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| 18. | Diatomaceous earth will also control both slugs and ants, but must be reapplied after rain.
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| 19. | Look for diatomaceous earth and pyrethrin at garden centers.
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| 20. | Common media include diatomaceous earth, or kieselguhr, and perlite.
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