Snap traps are one of the most effective ways of catching rats. You have to get into the attic and set multiple traps to improve your chances of success. If you’re dealing with roof rats, appropriate bait to use include dried fruits, nuts, and berries. In the slim chance that you’re dealing with a brown rat, appropriate baits include chocolate and peanut butter. Place the traps near entry holes or in high traffic areas. You can always find a high traffic area by the concentration of droppings or nesting materials.
If you’re fortunate enough that they haven’t gained access to your attic, you can place the traps on the roof tiles. But you have to ensure that you affix them properly so that they don’t get blown away by wind or washed away by water.
Another modern option that’s gaining wide traction is electronic traps. It delivers a high-voltage shock to the rat and kills it instantly, making them humane. Also, they are easily reusable unlike glue traps and are safe to use around kid and pets, unlike snap traps.
Ensure that you regularly check your traps so that you can quickly dispose of the carcass once the rat has been captured and killed.