What Foods Attract Rats the Most?

In order of typical household impact: garbage tops the list, because it offers a balanced diet and moisture in one place. Pet food is a close second, especially bowls left out overnight or bulk kibble stored in unsealed bags — rat problems frequently track with outdoor dog feeding. Cereal grains and dry goods in gnawable packaging rank third. Birdseed and fallen seed under feeders are fourth, and compost with kitchen scraps or fallen fruit and nuts rounds out the top five. UC IPM specifically lists cereal grains, meats, fish, nuts, and some fruits as preferred items.

New Hampshire's dominant commensal species is the Norway rat — a ground-dwelling burrower found in basements, crawlspaces, and under decks. Norway rats favor high-carbohydrate and high-protein foods: cereal grains, meat scraps, fish, and especially pet food. Roof rats, an arboreal climber less common in the Northeast, prefer fruits, tree nuts, berries, snails, and even bird eggs, reflecting their tree-and-attic foraging habits. A ground-level rat problem in a Manchester-area basement is almost always a Norway rat drawn by grain, garbage, or pet food, not fruit.

A rat needs about ½ to 1 ounce of water per day on a dry diet — less if it's eating moist food like garbage. That's why leaky pipes, pet water bowls, and condensation matter alongside food: a home that supplies both removes the two main constraints on rat survival. Cutting off food sources without also addressing water and structural gaps rarely resolves an active problem on its own.