Rat Poison vs. Fertility Management
Poison kills the rats that eat it.
It doesn't stop the ones that come next.
Poison does its job. The problem is what happens four to six weeks after the colony clears. An empty territory in a food-rich urban block fills from the surrounding population — at full breeding rate — before your next scheduled treatment.
Start the 90-day programWhere it works
It kills what's there. That part works.
Rodent poison placed along travel paths and near entry points will kill the rats that eat it. The colony that's currently active goes down. For light infestations or one-off incidents, it's often the right first tool.
The problem isn't what it does. The problem is what happens four to six weeks after it does it.
Where it falls short
Killing the colony makes the territory available.
Rats are territorial. When a colony is present, their scent markers keep other groups out. Remove that colony with poison and those marks fade within days. The food source didn't move. The building didn't move. Rats from the surrounding block detect the open territory and fill it within weeks.
The replacement colony comes in at full reproduction rate. You're back to baseline before the next scheduled visit.
Other problems with rodent poison
The cycle isn't the only issue.
Secondary kill risk
Hawks, owls, and foxes that eat poisoned rats absorb the toxicant. Stronger rodent poisons — the anticoagulant type — carry the highest secondary risk and have been under increasing EPA restrictions for consumer use.
NYC restrictions
In 2021, NYC banned commercial exterminators from using the strongest class of anticoagulant rodent poison. What was standard practice a few years ago is now restricted. The approved list changes.
It produces dead rats
Poison creates visible evidence — dead rodents in food storage areas, near prep surfaces, or where tenants can find them. For restaurants, that creates its own inspection and liability exposure even when the treatment is technically working.
How they compare
Poison and fertility management solve different parts of the problem.
Rat Poison
Kills the current colony
Visible evidence of action
Stops the replacement colony from forming
Reduces reproduction rate over time
No secondary kill risk
Safe for continuous food-environment use
Produces 90-day declining trend documentation
Fertility Management (Evolve)
Kills the current colony
Phase 1 handles this
Visible evidence of action
Stops the replacement colony from forming
Reduces reproduction rate over time
No secondary kill risk
Safe for continuous food-environment use
Produces 90-day declining trend documentation
The 90-day program uses both. Phase 1 clears the current colony with whatever treatment is already in place. Phase 2 adds Evolve on top to prevent the replacement from forming at the same rate. Together they produce a declining trend. Separately, neither does.
Field data
What a combined program produces over 90 days.
79%
reduction in rodent track presence
Location A — 5-month urban field study, Aug 2025 to Jan 2026
88%
drop in track density at the same site
Tracks per monitoring plate declined even where rodents were still present
90%
fertility reduction potential
When Evolve runs alongside an active pest control program
Keep the poison. Add the layer that stops the cycle.
The program works with whatever treatment is already running. Your vendor stays. We add the fertility layer on top.