Ecoshield is the result of a genuine desire to combine science & nature in the fight against insects. The active ingredient of Ecoshield treatment is 100% natural & based on the oil of the Eucalyptus Citriodora tree. Completely harmless to humans, its renowned for its insect repellent qualities. All fibre & textile materials treated by Ecoshiled are wash-resistant, thanks to microcapule technology. This technology permits the active ingredient to be released gradually over time, since the capsules only break open when using the mattress.