There are lots of unique ways that individuals can manage a rat problem, but among the most common and effective methods is by trapping the animals. There are some folks who will believe using a cage trap to capture and relocate rats is a humanist approach, but typically the rat won't survive in a habitat that is new, so nearly all individuals that are searching for humane extermination will be looking at these traps which will kill rats immediately and cause the minimum amount of pain for the rat.
Snap Traps: This sort of trap is most likely the most frequent and the most affordable sort of rat trap, and it is usually put on a simple piece of wood, with a pub and spring which will then close and kill the rat when it activates the trap. Due to their low cost these traps are extremely popular, and when they're set in the ideal location and have a lure to draw the rats to the trap itself, they can be an extremely effective and humane means of dealing with a rat issue.
Crocodile Style Traps: A similar sort of trap that uses a spring based mechanism to shut the trap round the rat itself, these are usually made from a toughened plastic or out of metal, and both may effectively deal with rats. This sort of trap will also generally have a little cup in the trap itself where it is possible to place the bait.
Electrocution Trap: These traps are a bit more expensive and they're usually larger than the manual spring operated traps, but a lot of people do favor them since they're quite swift when it comes to killing the rat, and will do this with very little pain for the rat. These are typically battery operated, and will have a plastic cover with a grip over the trap that helps to make it easy to dispose of the rat without needing to touch the creature.
Gas Traps: Somewhat like a gas chamber, these are just another sort of humane rat trap since they will use carbon dioxide to kill the rat painlessly and efficiently, although like the electrocution traps, they're a bit more expensive in comparison to the spring loaded traps. These options will tempt the rat into a little room, and when the door shuts the gas is then released which will finally kill the rat inside after a brief period.
While humane traps are the best way to manage rats, there are numerous other methods that individuals can use, and compound alternatives should be avoided, such as rat or poison repellents. Poison can be an issue since you do not always know where the rat will die, and it may take hours or even days for the toxin to kill the creature. So, not only are they inhumane, it's also a danger if you can't locate the rat's carcass to remove it. Chemical repellents are also fairly common, but typically they will have hardly any impact on the rat. Another sort of trap that you need to avoid is the glue trap, since this can take a while to kill the creature, and isn't at all humane.