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(S)-Methoprene

Type: Insect Growth Regulator

Mode of Action: Mimicking juvenile hormone (JH)

Common Product Names: MetaLarv XRP

What is it?

(S)-Methoprene is a synthetic chemical analog of the juvenile hormone found in insects. It is a potent insect growth regulator used to manage insect populations by interfering with their growth and development rather than killing them directly. The compound is particularly effective against species such as mosquitoes, fleas, flies, and moths. Available in various formulations, including granules, liquids, and slow-release briquettes, (S)-Methoprene is designed for different environments, from agricultural settings to household use. Because it is not a broad-spectrum insecticide, it is generally considered safer for non-target organisms, including humans, pets, and beneficial insects like bees. Depending on the targeted insect species, results can be seen within a few weeks as the treated larvae fail to mature into adults. (S)-Methoprene is typically long-lasting, providing residual control over several weeks to months, depending on the environmental conditions and the formulation used.

 

How does it work?

(S)-Methoprene works by disrupting the normal development process of insects. When applied, it mimics the natural juvenile hormone that insects produce during their larval stage. This hormone keeps the insect in its immature state. As long as (S)-Methoprene is present, the insect is unable to molt into its adult stage, thereby preventing reproduction. Over time, this results in a reduction of the insect population.

Benefits

  • Targeted Action: Specifically affects insects, leaving non-target species and the environment largely unaffected.
  • Prevents Reproduction: By inhibiting the maturation of insects, it effectively reduces future pest populations.
  • Long-Lasting: Provides extended residual control, reducing the frequency of applications.
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