Visual Confirmation Checklist

Use several clues together before confirming this pest. One photo or one sign can be misleading.

• Larger than mice with heavier body, blunt nose, and thicker tail
• Droppings are larger, capsule-shaped, and often found along walls or near food sources
• Gnaw marks are larger and may damage wood, plastic, pipes, or wiring

Signs of Infestation

• Large droppings, greasy rub marks, and urine odor along walls or beams
• Burrows near foundations, sheds, trash areas, or vegetation
• Gnawed openings, damaged food storage, scratching noises, or visible runways

Habitat

• foundations
• crawl spaces
• garages
• trash areas
• sewers
• dense vegetation

Health Risk

Rats can contaminate food and surfaces, carry pathogens, introduce fleas or mites, and create bite risk if cornered or handled.

First Steps

• Look for large droppings, burrows, rub marks, and gnawed openings before setting traps
• Remove outdoor food sources such as trash, pet food, bird seed, and fallen fruit
• Place heavy traps or stations along walls and travel routes, away from children and pets
• Avoid sealing the main entry before reducing indoor activity

Treatment Methods

• Identify whether activity is indoors, outdoors, in burrows, or along utility lines before setting control devices
• Use heavy snap traps or tamper-resistant bait stations along walls and runways
• Remove open trash, pet food, fallen fruit, bird seed, and dense ground cover
• Seal large openings with metal, concrete, or hardware cloth after activity is reduced
• Do not handle live or dead rats with bare hands

Professional Treatment Options

• Rodent inspection and exclusion plan
• Burrow, crawl space, and exterior station program
• Interior trapping with follow-up monitoring
• Contamination cleanup and odor recommendations

Call a professional when rats are seen indoors, burrows are present near the foundation, wiring or pipes are damaged, or activity is repeated around trash or crawl spaces.

Prevention Tips

• Keep trash sealed and away from doors
• Remove clutter, wood piles, and dense vegetation near foundations
• Seal gaps around garage doors, vents, pipes, and crawl space doors
• Pick up pet food and fallen fruit nightly
• Inspect for burrows around sheds, decks, and foundations

Evidence and Comparison

Life Cycle

Rats reproduce throughout the year when food and shelter are available, often nesting in burrows, wall voids, or protected storage areas.

FAQ

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