When it comes to baiting a rat trap, there are several options that can be effective. Here are some tips from the search results:

• Bait according to a rats diet: Different species of rats eat different types of food. For instance, black rats are herbivorous creatures, but brown rats are omnivorous by nature. Black rats find peanut butter irresistible, while brown rats can be tempted with smelly cheese. Regardless of the species, food with strong smells such as nuts, fish, or moldy cheese are best at luring rats into traps.

• Use high protein foods: Rats are most attracted to high protein foods such as peanut butter, hazelnut spread, bacon, dried fruits, or cereal.

• Attach the bait to the trap: Be sure to attach the bait to the trap so that the rat cannot remove it without springing the trigger. The bait can be attached by tying it with thread or fine wire or even gluing it in place. Some traps have a small cup for holding the bait.

• Be patient: Rats may not approach a trap for several days after it is placed. As long as the bait is properly positioned in the trap (and hasnt been taken by a rat), you can leave the trap for many days or even a couple of weeks.

• Use multiple traps: Statistically, you always trap the most rats on the first night, so by setting many traps overnight you increase your odds substantially.

Overall, the best bait for a rat trap depends on the species of rat you are trying to catch and their diet. However, food with strong smells and high protein content are generally effective. It is also important to attach the bait to the trap and be patient, as rats may not approach the trap for several days.