Peanut butter is the most reliable all-around rat bait for snap traps. Its strong smell draws rats in, its sticky texture keeps them from grabbing it and running, and its high calorie density makes it irresistible to a hungry rodent. But peanut butter isn’t the only option, and the best choice depends on the type of rat you’re dealing with, whether you’re using traps or poison stations, and what else is available to the rats as a food source.
Why Peanut Butter Works So Well
Peanut butter checks every box for effective rat bait. It has a potent aroma that travels well, so rats can detect it from a distance along their travel routes. Its sticky consistency forces rats to work at the trap trigger rather than delicately lifting a piece of food off it, which means the trap is far more likely to fire. And because rats are constantly seeking calorie-dense foods, the combination of fat and protein in peanut butter is a natural draw.
A pea-sized amount is all you need. Too much bait lets a rat eat around the edges without engaging the trigger mechanism. Smear it directly onto the trigger plate so it can’t be peeled off in one piece.
Other Food Baits Worth Trying
The two most common rat species in homes have different dietary preferences, and matching your bait to the species can improve your results. Norway rats (the larger, ground-level species) are true omnivores with a strong preference for animal-based protein. Stomach analyses of Norway rats have found diets consisting of up to 86% fish in populations near fish markets, and they readily eat meat scraps, bacon, and pet food. Roof rats (the smaller, more agile species that tends to live in attics and upper floors) lean heavily toward fruits, seeds, and grains, which make up roughly 51 to 59% of their diet.
For Norway rats, try small pieces of bacon, hot dog, or dried fish secured to the trigger. For roof rats, dried fruit, nuts, or a small piece of banana often works better than meat-based options. Chocolate and gumdrops can also be effective for either species because of the sugar and fat content.
If you’re unsure which species you have, peanut butter bridges both preferences since it combines fat, protein, and a slightly sweet flavor.
Non-Food Baits That Rats Can’t Resist
Rats don’t just look for food. They actively gather nesting material, especially females preparing to breed. Cotton balls (with a drop of vanilla extract for scent), small pieces of dental floss, yarn, or strips of cloth tied to a trap trigger can be surprisingly effective. Pest control professionals report that nesting material sometimes outperforms food baits in situations where rats have plenty of other food sources available, like in a kitchen or near pet food storage.
This approach works because you’re targeting a different drive entirely. A rat that ignores peanut butter because it just ate may still grab a cotton ball to line its nest.
Overcoming Trap Shyness
Rats are neophobic, meaning they instinctively avoid new objects in their environment. This is why a freshly placed trap often sits untouched for days. At the initial stages of encountering a new object, rats exhibit high caution and are prepared to flee at the slightest disturbance.
Pre-baiting solves this problem. Place your traps with bait but leave them unset for two to three days. Let the rats find the bait, eat it, and return for more. Once they’ve fed from the trap confidently a few times, set the trigger. This technique dramatically increases catch rates because the rat has already associated the trap with a safe food source.
Freshness matters throughout this process. Rats reject spoiled, stale, or insect-infested bait. If your bait gets moldy or dusty, replace it. In warm or humid conditions, swap out food-based bait every two to three days.
Where and How to Place Baited Traps
Even the perfect bait won’t work if the trap is in the wrong spot. Rats avoid open spaces and travel along walls, pipes, and edges. Place traps directly against walls with the trigger end facing the wall, so the rat walks into the bait as it moves along its usual path.
Set traps in pairs, right next to each other. A rat that jumps over or dodges the first trap often lands directly on the second. For a moderate infestation in a standard room, aim for around ten traps per 12-by-12-foot space. More traps are better than fewer, especially in the first few nights when you’re trying to make a dent in the population. Place them along confirmed runways (look for droppings, grease marks on walls, or gnaw marks) and at likely entry points.
Commercial Poison Baits
If you’re considering rodenticide rather than snap traps, the consumer market is more restricted than it used to be. The EPA no longer allows second-generation anticoagulant poisons or loose pelleted baits for residential consumer use. What you’ll find at hardware stores are ready-to-use bait stations containing block or paste bait with one of three active ingredients: bromethalin (a nerve toxicant), chlorophacinone, or diphacinone (both first-generation anticoagulants that interfere with blood clotting).
These bait stations are designed to be tamper-resistant so children and dogs can’t easily access the poison inside. Products labeled for outdoor use must be placed within 50 feet of buildings and need to meet additional standards for weather resistance and child/dog tamper resistance.
Risks to Pets and Wildlife
Poison baits carry a real risk beyond the target rat. Dogs and cats can be poisoned in two ways: by chewing into a bait station directly, or by eating a rat that has consumed poison (called relay toxicosis). Anticoagulant poisoning in pets causes internal bleeding, which can show up as lethargy, weakness, pale gums, nosebleeds, difficulty breathing, or blood in urine or stool. In some cases, sudden death occurs, though that’s rare.
Bromethalin poisoning works differently, causing neurological symptoms like tremors and loss of coordination. Both types of poisoning are veterinary emergencies.
If you have pets, outdoor cats, or wildlife you care about (owls and hawks are common secondary victims), snap traps are the safer choice. They kill instantly without introducing poison into the food chain.
Scents That Repel Rather Than Attract
Some natural products marketed for rodent control actually drive rats away rather than attracting them, which is the opposite of what you want on a trap. Eucalyptus oil, peppermint oil, pine needle oil, and chili-based products have all been studied as rat repellents. They work by creating unpleasant sensory experiences that discourage feeding and exploration. If you’ve been dabbing peppermint oil on your traps hoping to attract rats, that’s likely why they’re not working. Save those oils for areas where you want to deter rats from entering, not for baiting traps.