Rats

Rats are not big mice

Everything that makes mouse control easy is reversed with rats. A mouse investigates new objects; a rat avoids them for days, a behavior called neophobia, and it is the single reason most rat trapping fails. A mouse can be caught the night you set the trap. A rat usually cannot.

They are also strong enough that a trap which merely injures is a real problem — for the animal and for you. That is why we steer people toward full-size snap traps and proper electronic traps rather than the light plastic ones, and why we are blunt about where each one belongs. Mice vs rats will confirm which animal you have before you spend anything.

The approach that works on a wary animal

1. Pre-bait unset traps for three to five nights. Put the traps out, bait them, and leave them unset. The rat learns that the new object is a food source and stops treating it as a threat. Then you set them all on the same night. This one step does more for your success rate than any product choice.
2. Use enough traps. As with mice, quantity beats cleverness — six traps on a run, not one.
3. Place against structure. Rats run walls, pipes, joists and fence lines. A trap in the middle of a floor catches nothing.
4. Secure the bait. Tie or smear it so the rat has to work at it. A bait a rat can lift off cleanly is a bait that taught a rat the trap is harmless.
5. Find the entry. Rats need a gap about the size of a half-dollar. Until it is closed, you are trapping a stream, not a population.

Our full sequence, with the details of each step, is in how to get rid of rats.

Choosing by where the rats are

In the attic or crawl space. This is the classic roof-rat situation: noise overhead at dusk, droppings on insulation, gnawed cable. Handling a dead rat in a crawl space is grim, which is why electronic rat traps earn their price here — the animal dies inside the tunnel and you tip it out without touching it. Rats in the attic covers the rest, including the insulation question.

In the yard, under decking, around a coop. Outdoor pressure is continuous, because the yard connects to everyone else's yard. Outdoor rat traps and rats in the yard deal with weather, non-target animals, and the food source you have not noticed yet.

Around a bait decision. Bait stations are the locked boxes you see against commercial walls. Our recommendation is usually to buy the station and load it with snap traps rather than poison, for reasons set out in rat trap vs poison and in the honest answer at is there pet-safe rat poison.

Where the rat has already beaten you once. A rat that has survived a trap will not approach that trap again. Trap-shy rats is the page for that specific, frustrating situation.

On poison

Anticoagulant rodenticides work. They also create two problems the label does not solve: the rat dies somewhere you cannot reach, and whatever eats the carcass — a cat, an owl, a fox, a dog — takes on the dose. Second-generation anticoagulants persist in the liver of the animal that ate them, which is the mechanism behind documented secondary poisoning of raptors and pets. We cover it honestly rather than pretending the demand does not exist, and we route you to the safer method that does the same job.

When to stop and call someone

This site exists to help you do it yourself, which is exactly why it should tell you when not to. A structural colony in the walls of a building, a large droppings clean-up in an unventilated crawl space, or any situation involving a vulnerable person in the house is a job for a professional. Humane rat control also covers the cases where the kind option and the effective option genuinely diverge.