
See below for more information on live traps. Any larger, and you run the risk of being unable to catch all of the rats before they breed.

Thus, live traps are best-suited for small rat problems - instances when there's only about one or two rats loose in your house. Since live traps are almost always significantly more expensive than ordinary disposable rat traps, it can be impractical to buy more than one.

Most disposable rat traps are available for quite cheap, so it's not a bad idea to buy one or two more than you think you'll need. Start by heading to your local hardware store and buying plenty of rat traps - the more you're able to set, the better chance you stand of trapping rats. The quicker you can start trapping rats, the less time the population of rats will have a chance to expand. Once you've identified a rat problem, you'll want to work fast.
