Snap traps are the most effective and economical option for catching pack rats, and they’re the type most pest control experts recommend. Pack rats (also called woodrats) are similar in size to common rats, so you need full-size rat traps, not mouse traps. Getting results, though, depends on more than just picking the right trap. Placement, bait, timing, and safety precautions all factor into whether you’ll actually solve the problem.
Which Trap Type Works Best
You have three main options: snap traps, electronic traps, and live-capture traps. Each has trade-offs, but snap traps are the strongest all-around choice for pack rats.
Snap traps are simple, reusable, and cheap. They kill quickly when they work correctly, though they can misfire or injure rather than kill the animal. You can also pinch your own fingers while setting them. Despite these drawbacks, they remain the standard recommendation from university pest management programs because they’re reliable, work indoors and outdoors, and don’t require batteries or power.
Electronic traps lure the rat inside and deliver a high-voltage shock intended to stop its heart. They’re reusable and relatively affordable, but they only work indoors, need batteries or a power source, and must be cleared and reset after every catch. Their kill rate isn’t as consistent as manufacturers suggest.
Live-capture traps are easy to set up and keep costs low. The problem is you need to check them at least once or twice a day to prevent the trapped animal from suffering without food or water. You also have to relocate the rat afterward, and releasing a pack rat far from its home territory often means it won’t survive. The University of Arizona’s hantavirus guidelines specifically advise against cage traps because frightened rodents urinate and defecate inside the trap, increasing your exposure to disease.
Best Baits for Pack Rats
Pack rats respond well to many of the same baits that attract other rodents, but they have a unique quirk: they’re drawn to small, bright, shiny objects. This hoarding instinct is what gives them their name. You can use this to your advantage by attaching a small piece of foil or a shiny button near the trap’s trigger.
For food baits, Montana Fish, Wildlife & Parks recommends peanut butter, oatmeal, nuts, bacon rind, raisins, or dried fruit. Peanut butter is especially effective because it’s sticky and forces the rat to spend time working the trigger rather than snatching a loose piece of food and running. Smear a pea-sized amount directly onto the trigger plate.
Where to Place Your Traps
Placement matters more than most people realize. Pack rats are cautious animals that detect and avoid new objects in their environment. They may ignore your traps for the first several days, sometimes even weeks, after you set them out. Don’t move the traps around during this period. Leave them in place and let the rats get used to their presence.
Position traps close to walls, behind objects, in dark corners, and anywhere you’ve spotted droppings or nesting material. Pack rats travel along consistent routes, so droppings are a reliable indicator of where they’ll pass. If you’re dealing with a species that climbs (some pack rats are excellent climbers), also try elevated locations like ledges, shelves, fence rails, or overhead beams. Set traps perpendicular to the wall with the trigger end closest to the wall, since rats tend to run along edges rather than through open space.
Use multiple traps. A single trap rarely solves the problem, especially if you have an established nest nearby. Space several traps a few feet apart along the routes you’ve identified, and keep them out of reach of children and pets.
Handling Traps and Dead Rats Safely
Pack rats can carry hantavirus, a serious respiratory illness spread through their urine, droppings, and nesting debris. You need to take precautions every time you check traps, handle a dead rat, or clean up a nest.
Wear disposable rubber or plastic gloves, not fabric ones. Fabric is porous and lets pathogens through. For heavy infestations or nest cleanups, wear a respirator with a HEPA filter and unvented goggles. Before entering a space with droppings or nesting material, open all doors and windows and let it air out for 30 minutes.
When you find a dead rat in a trap, spray it with a disinfectant or a 10% bleach solution (1 part bleach to 9 parts water) and let it soak for at least 15 minutes. Then, with your gloved hand inside a disposable plastic bag, pick up the rat and trap together, invert the bag over both, and seal it. Place that bag inside a second bag and throw it in an outdoor dumpster or trash bin.
Spray the spot where the trap was sitting with the same bleach solution. Never sweep or vacuum droppings or nesting material. Sweeping launches dried particles into the air where you can inhale them. Instead, spray everything down first, let it soak, and wipe it up with wet disposable towels. Double-bag the towels and dispose of them the same way.
Why Trapping Alone Isn’t Enough
Trapping removes the rats you have right now, but new pack rats will move in if your property still looks inviting. The combination of trapping and exclusion (sealing entry points) is what actually solves a pack rat problem long term.
Start by finding and removing any active nests. Pack rat nests, called middens, are large piles of sticks, debris, cactus pads, and stolen objects, often tucked under vehicles, sheds, wood piles, or dense vegetation. Remove the nest material while wearing protective gear and following the same disinfection steps described above.
Next, seal entry points into your home and outbuildings. Pack rats can squeeze through gaps you might not expect. Metal screen secured with screws is the most durable option for vents, crawl space openings, and gaps around pipes. Steel wool stuffed into smaller cracks works as a temporary fix but won’t hold up over time. Pay attention to areas where utility lines enter the building, gaps under doors, and openings around roof vents.
Reducing food and shelter sources on your property also helps. Clear wood piles, brush, and dense ground cover near your home’s foundation. Store pet food and birdseed in sealed containers. Avoid using poison, which is widely discouraged for pack rats. Poisoned rats often die in inaccessible spots, creating odor problems, and the toxins can move up the food chain to owls, hawks, and other predators that naturally help control rodent populations.