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Haverford Climate Action

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More Information Coming Soon

Green Earth Initiative

Herbicides- Weed Killers

Pesticides/Insecticides- Pest/Insect Killers

Pesticides/Insecticides- Pest/Insect Killers

Roundup, the most popular and profitable weed killer ever sold, uses glyphosate as its most active ingredient. Glyphosate is toxic to most broadleaf plants and grasses. It kills most plants it comes into contact with, instead of targeting certain weeds or plants.

Monsanto, no longer an active company, developed the product. Because glyphosate kills anything it touches, Monsanto developed plant seeds that were genetically modified to resist the damage of Roundup. This is when residential Roundup sales skyrocketed.

However, as the years went on, science questioned the safety of glyphosate. Studies have shown that the chemical might cause illness to humans and cause damage to the environment. The International Agency for Research on Cancer categorizes glyphosate as possibly carcinogenic to humans, as in this toxin may cause cancer.

In 2018, Roundup was purchased by Bayer. By then, consumers had filed thousands of lawsuits linking Roundup to cancer. Bayer committed to begin in 2023 replacing “its glyphosate-based products in the U.S. residential Lawn & Garden market with new formulations that rely on alternative active ingredients.”


Want a safer alternative to Round UP? Try some of these options listed HERE

Pesticides/Insecticides- Pest/Insect Killers

Pesticides/Insecticides- Pest/Insect Killers

Pesticides/Insecticides- Pest/Insect Killers

Pesticides significantly endanger biodiversity by poisoning non-target organisms, reducing food sources for wildlife, and harming soil health. Avoiding synthetic pesticides—especially insecticides and herbicides—supports pollinators, birds, and soil microorganisms essential for ecosystem resilience. Opting for organic, integrated pest management methods fosters a healthy, self-sustaining environment. 

Why Avoid Pesticides for Biodiversity

  • Widespread Non-Target Impact: Over 800 species—including pollinators, birds, and microbes—are negatively impacted by pesticides used on farms and in homes.
  • Soil Health Degradation: Common insecticides (organophosphates, neonicotinoids) and fungicides harm soil organisms like earthworms and springtails, which are vital for nutrient cycling.
  • Food Chain Disruption: Herbicide use kills essential weeds, eradicating food sources for pollinators and insects, which causes a ripple effect (trophic cascade) that threatens birds and other wildlife.
  • Pesticide Drift: Up to 25% of applied pesticides can drift into surrounding areas, contaminating ecosystems far from the target area. 

Actionable Tips to Foster Biodiversity

  • Embrace "Messy" Gardens: Allow native plants and weeds to thrive to provide habitats and food for beneficial insects.
  • Use Natural Alternatives: Utilize organic pest solutions like neem oil, diatomaceous earth, or biological controls (e.g., ladybugs) instead of synthetic chemicals.
  • Support Soil Life: Avoid chemical fertilizers, which, when paired with pesticides, significantly reduce the biodiversity of soil organisms.
  • Practice Integrated Pest Management (IPM): Focus on prevention and monitoring rather than prophylactic chemical application. 

Pesticides to Avoid

  • Neonicotinoids: Extremely hazardous to bees and other pollinators.
  • Organophosphates, Pyrethroids, and Carbamates: Highly toxic to a broad spectrum of non-target invertebrates.
  • Glyphosate and other Herbicides: Reduce plant diversity and soil health

Mosquito Bucket Challenge

Mosquitoes are often controlled with broad pesticide spraying, called fogging. These treatments don’t just affect mosquitoes—they can impact other insects, wildlife, and people, and they don’t address where mosquitoes reproduce.

The Mosquito Bucket Challenge offers a more targeted approach. By controlling mosquitoes at the source, it reduces populations without affecting the rest of the ecosystem. It’s safe, it's affordable, and it's better for biodiversity.


Draw Them In

Mosquitoes are drawn to the water to lay eggs


Break the Lifecycle

A targeted solution stops larvae from developing


Fewer Bites

Fewer mosquitoes emerge in your yard




Find out more




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