Late one night, I found a post from a pest researcher that changed everything.
He explained something I'd never heard before.
"The reason traps don't solve infestations is simple. You're removing individual mice. You're doing nothing about the reason they chose your home. And as long as that reason exists, new mice will keep finding you."
That reason, he explained, is acoustic.
Mice experience the world almost entirely through sound.
Their hearing extends to 90,000 Hz nearly five times what humans can detect.
In that range, mice communicate constantly.
When mice feel safe in an environment, they emit ultrasonic signals.
A silent broadcast to every rodent nearby: "Safe here. Come in."
Traps, poison, and exterminators all target individual mice.
None of them turn off that signal.
Which is why the cycle never ends.
New mice detect the same "safe" beacon and move straight in.
The pest control industry built a $22 billion business on this cycle.
Monthly contracts. Quarterly visits. Replacement bait stations.
A permanent solution would destroy their business model.
So they never tell you about the signal.
I felt genuinely angry.
But for the first time, I also felt like I understood the problem.
And if I understood the problem, I could finally fix it.