Rat Rangers Lead Community Walks to Curb Washington, D.C.’s Rat Surge

In late September, the volunteer group Rat Rangers guided roughly two dozen D.C. residents through a trash-laden alley, showing them where rodents hide and how everyday habits fuel infestations. Led by anthrozoologist Holly Gerberich and co-leader Gerard Brown, the walks equip participants with headlamps, closed-toe shoes and a clear message: “Sanitation is rodent control.” Organizers stress that a single pair of healthy brown rats can produce up to 15,000 offspring in a year, underscoring the urgency of cutting off food sources.

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A 2024 City Wildlife study found large numbers of local wildlife with blood-clotting issues after ingesting anticoagulant rodenticides. The study prompted the Rat Rangers to shift focus from poison to prevention, arguing that “the reason that they’re here is because we provide an ideal environment for them.” Their advice centers on composting, using kitchen disposals, securing outdoor trash bins and eliminating clutter that offers shelter.

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Andre Pitman, D.C.’s program manager for the Rodent and Vector Control Division, oversees a team of 16 inspectors who handle thousands of service requests each month. Pitman acknowledges that even pilot efforts—such as liquid contraceptives in bait stations—are insufficient without resident participation. Similar education pilots are under way in Boston and New York, reflecting a broader municipal shift toward community-based rodent management.

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• “The reason that they're here is because we provide an ideal environment for them,” — Holly Gerberich, Rat Rangers

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• “As long as I'm standing over here, I'm OK,” — Auggie Merritt, 13-year-old participant

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• “Rats are on this world like every other animal,” — Catrina Valente, D.C. resident

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• “Not one person can do this,” — Andre Pitman, D.C. Rodent and Vector Control Division

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These walks aim to turn curiosity into collective action, hoping that cleaner alleys will eventually curb the city’s growing rat population.

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