Save Waltham Wildlife

Save Waltham Wildlife (SWW), a Waltham Land Trust initiative, began in February 2023, when several WLT volunteer trail stewards attended a presentation in Lexington by Laura Kiesel, the founder and driving force of Save Arlington Wildlife. The primary goal of both groups at this time is to limit and eventually ban altogether the use of Second-Generation Anti-Coagulant Rodenticides (SGARs), which have been killing local raptors (including three eagles).


Because SGARs act slowly, rats who have eaten SGARs have time to wander out into the open and, as they are dying, to become the prey of hawks, owls, eagles, foxes, and, sometimes, family pets. In digesting the rat, the predator also ingests the poisons, leading to internal bleeding and all too often to death


Since banding together, SWW's main activities have been raising awareness, lobbying local officials, and gathering information. In terms of raising awareness, one of SWW's first major initiatives was to bring Laura Kiesel to Waltham, where she gave a presentation on SGARs and alternative methods of rodent control at the Waltham Public Library on May 6, 2023. See Laura’s slideshow below.

Barred Owl

Prospect Hill Park

Waltham, MA

Later in May 2023, the Waltham Land Trust submitted a letter of support for two bills at the statehouse, one of which gives control to local communities regarding use of pesticides. You can read it below.


On March 9, 2024, SWW joined forces with Mass Audubon to hold a hybrid meeting reiterating the dangers of rodent poison and ways local residents can get involved protecting Waltham wildlife. Watch the video of the meeting to learn more.


SWW held a follow-up Zoom meeting on March 28. Here is a PDF of the slide presentation.


SWW and WLT will continue to lobby for city-wide banning of SGARs and for a more holistic approach to rodent control, involving better trash management (including the provision of large, rodent-safe trash bins to all Waltham residents) and greater use of both Contra-pest and snap traps.


Latest SWW News

By Daniel Melnechuk September 5, 2025
SWW End of summer update September 5th, 2025 We’re happy to report that Waltham’s two universities, Bentley and Brandeis, which between them cover a good deal of green space and border on much more, have both stopped using SGAR poisons on their campuses. Bentley University clarified to us last spring, after several contacts, that they…
By Daniel Melnechuk September 5, 2025
SWW End of summer update September 5th, 2025 We’re happy to note that the City’s new dumpster ordinance, which passed last spring with modifications suggested by SWW members and others, has come into effect as of this June. If you notice a problem dumpster in your neighborhood (overflowing, uncovered, rusted out, etc.), you might consider reporting…
By Daniel Melnechuk August 21, 2025
The Waltham Times A young coyote found at Brandeis University on July 25 has tested positive for a significant amount of second-generation anticoagulant rat poisons, two of which Brandeis University has reported using in the past. The coyote was found alive and died while in the care of a wildlife rehabilitator.
By Daniel Melnechuk July 27, 2025
The Waltham Times The death of a majestic bald eagle during the winter of 2023 sent shockwaves through the environmental community and sparked a local movement that continues today. The eagle, known as MK, was the third member of a family that once lived in Waltham’s Mount…
By Daniel Melnechuk July 25, 2025
The Waltham Times The Waltham Land Trust met last Wednesday at the Charles River Museum of Industry & Innovation with teens from the Boys & Girls Clubs of Waltham, Watertown and Newton. The participants were invited to brainstorm ways to engage younger people in the WLT’s work to end the…
By Shari Candito July 24, 2025
Save Waltham Wildlife, an initiative of the Waltham Land Trust, was thrilled to be part of this exciting day of advocacy at the MA State House, urging legislators to pass H.965/S.644, a bill to restrict the use of rodenticides statewide. Over 200 fellow nature lovers from the Berkshires to Cape Cod attended, with 50+ groups…

What You Can Do

REPORT any lethargic or injured hawk, owl, or other wildlife that you see:



ALSO REPORT:


  • Any dead rat/rodent on city property (conservation land, sidewalk, street, parking lot, around a public building). Immediately contact Public Works at 781-314-3855 for its removal. Photograph and make note of location.


Note and record any animal (wild bird, mammal, or pet) consuming or feeding on a dead rat or mouse.


To learn more and become involved with SWW, please email savewalthamwildlife@gmail.com.


The Rat Poison Problem: How Rodenticides Harm People, Pets, & the Planet

  • Climate change, rapid construction, and increasing population density have contributed to a dramatic rise in rat and mouse populations in and around metropolitan areas like Boston.


  • Rat poison is typically the primary method used to address the problem.


  • These poisons are harming and killing local wildlife and pets, putting young children at risk, while doing little to effectively reduce rodent populations.

Rat Bait Box


Watch the Presentation by Laura Kiesel from May 6, 2023

Hawk eating a rat

Local naturalist and conservation advocate Laura Kiesel gave a presentation exploring the history of rodenticides, their impacts on human health and the environment, and potential solutions for moving forward in a way that protects our communities and the planet.


WLT Written Letter in Support of Two Bills

Click on the letter of support provided below to download and read