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Use shallow bowls or disposable food lids. Make sure you use something you don't mind throwing away and then add instant potato flakes to them. Set them where you've seen evidence of rats so that the potato flakes will be right in their path. Make sure to put at least 1/2 cup (50 g) in each bowl so the rats will really chow down. For this to work well, they need to drink water after consuming the potato flakes. Typically, they're pretty good at finding water on their own, but you can also set ou